Dex Save(DC 11): 9. 

After a clumsy step sees Rhogar stung by flames the Dragonborn roared out, "And this is why the dance of silver tongues is a fool's game!" He punctuates his point practically planting Avarice staff in the ground to free up a hand to execute his own divine spell with a few curt gestures. Yet even as heavenly flames rain down upon some of the cultist, Gorrah swooped in as well to give one a most righteous stinging for good measure!

Action(Rhogar): Cast Twinned(1sp) (Cantrip)[Tooltip Not Found] chainmail wearing cultists(if still alive, otherwise targeting cultist that attacked Rhogar & Chill). Dex Save(DC 16) or take 10 Radiant Damage.

Bonus Action(Rhogar): Command Gorrah to Attack.

Movement(Gorrah): Into melee with cultist that attacked Rhogar.

Action(Gorrah): Nighty-Night Stinging upon Cultist that attacked Rhogar.
(Nonlethal)Sting - Attack: 22 Damage: 5  of magical piercing. If hit, Con Save(DC 16) or become poisoned. If failed by 5 or more, target is knocked unconscious for the duration of the poison(1 hour). Taking damage or another creature using an action to shake them awake breaks unconscious condition. 

"It was a good attempt, Rhogar." Krom says bracing his shield against the cultist's strike. "But now it's time to send them back to their fiendish patron!"
Shouting a battle cry, the dwarf swings his flaming hammer with all his might, aiming to crush the cultist in front of him. "This is how you swing a weapon, lad!". At the same time, he chants an hymn of evocation, conjuring a radiant maul behind the cultist facing Kazri. The shimmering maul, guided by an invisible hand, attempts to pin down the cultist.
The spectral dwarves spring into action slashing and smashing all the cultists within range of their radiant weapons.

Action
Warhammer Attack: 16 Damage: 7 + 6 Fire damage on the cultist that attacked Krom

Bonus action
Spiritual weapon on the cultist that attacked Kazri Attack: 8 Damage: 6

Spirit Guardians is still active, all the cultists within 15ft of Krom take 12 Radiant damage - DC 15 Wisdom

(OOC - It seems that the dice roller has still some issues - I'll re-roll again the attacks/damage)

Warhammer Attack: 29 Damage: 9 + 2 Fire damage

Spiritual weapon Attack: 20 Damage: 5

Spirit guardians 24

DC 11 Dex save 14

"Cultist can be so predictable,  and way to devoted.   Blindness to their foolishness."

He takes aim to a red robed with steady aim and fires.

Attack: 21 Damage: 16

Kazri DEX Save: 13

The dark red robed cultist almost hits Kazri, and she can almost feel the necrotic force on the attack. Still, the Paladin gives a audible sigh. "You did try Mr. Nimbatuul. These fools will have to learn the hard way." Kazri raises her sword, and brings it down on the cultist attacking her.

Attack1: 26 Damage: 9

Attack2: 14 Damage: 7

Following Kazri's lead, with a loud growl Oli also attacks the same cultist.

Beak Attack: 11 Damage: 9

Claw Attack: 5 Damage: 12

(Not sure what happened with the banner. I didn’t edit the post. The numbers are right.)

Dex Save(DC 16) 19

Dex Save(DC 16) 2

Con Save(DC 16) 22

DC 15 Wisdom 5

DC 15 Wisdom 19

DC 15 Wisdom 17

DC 15 Wisdom 6

DC 15 Wisdom 7

vs Kazri - Attack: 8 Damage: 10 necrotic

vs Krom - Attack: 18 Damage: 13 necrotic

vs Oli - Attack: 9 Damage: 28 necrotic

Flame-like radiance descends on Chill - must make a DC 11 Dex save or take 7 radiant damage

vs Ghorrah - Attack: 4 Damage: 22 necrotic

vs Kazri - Attack: 12 Damage: 11 necrotic and the target’s weapon attacks deal half damage until the start of the cultist’s next turn.

vs Krom - Attack: 9 Damage: 11 necrotic and the target’s weapon attacks deal half damage until the start of the cultist’s next turn.

12

8

Krom Kazri and Oli team up to take down one of the cultists who is attacking Kazri.  As the battle rages the inept cultists continue to fight poorly and can't land a hit to save (literally) their own lives. Even the foolish cultist that tries to rain a sacred flame down on Chill doesn't realize that the tabaxi's reactions are so fine tuned that he doesn't even need to roll to avoid the attack. (Chill's minimum Dex save roll is 11, so he can't not avoid the attack)

The red robed cultists chant louder and as the one black robed cultist falls it then stands again.

Players back up, all opponents still up

Krom adjusts the angle of his shield and planting his feet firmly brings his fiery hammer down in a wide overhead arc, aiming crush the black robed cultist before him.
Meanwhile, the spectral dwarves continue their relentless attack, slashing and smashing all the cultists within range of their radiant weapons. The shimmering maul, hurled by an invisible hand, streaks through the air towards the nearest red robed cultist attempting to smash him down.

On going effect
Spirit Guardians 24 Radiant damage - Wis save DC 15 

Action
Warhammer Attack: 28 Damage: 8 + 3 Fire damage on the black robed cultist in front of Krom.

Bonus action
Spiritual weapon moves towards the nearest red robed cultist and attack Attack: 16 Damage: 11

Reaction
Krom intercepts one of the attacks against Oli or Kazri reducing the damage by 6

Rhogar still grumbles and growls but otherwise seemed mollified by the words of Krom and Kazri. Though as soon as he sees one of the cultist rise again sparks began to visibly crackling across his maw. "Your determination is praiseworthy, but do not think you lot will survive the day!" Declared the dragonborn before once more conjuring columns of divine blue flames to engulf cultist left and right. Meanwhile, Gorrah went from chittering in amusement at the one cultist that failed to strike her before diving in once more to deliver another most righteous sting!

Action(Rhogar): Cast Twinned(1sp) (Cantrip)Scorching Grace chainmail wearing cultists(if still alive, otherwise targeting cultist that attacked Rhogar & Chill). Dex Save(DC 16) or take 8 Radiant Damage.

Bonus Action(Rhogar): Command Gorrah to Attack.

Movement(Gorrah): Into melee with cultist that attacked Rhogar.

Action(Gorrah): Nighty-Night Stinging upon Cultist that attacked Gorrah(if still up, otherwise move and targeting a red robe cultist).
(Nonlethal)Sting - Attack: 20 Damage: 8  of magical piercing. If hit, Con Save(DC 16) or become poisoned. If failed by 5 or more, target is knocked unconscious for the duration of the poison(1 hour). Taking damage or another creature using an action to shake them awake breaks unconscious condition. 

(OOC: Meant Oli and Gorrah, not Chill and Rhogar when describing Rhogar's targets for his sacred flame.)

Chill stood silent, maintaining his steady aim and firing at the red robes.

Attack: 19 Damage: 34

Kazri actually rolls her eyes at the ineptitude of this lot. Seen that these cultists are beyond redemption, she presses with the attack on the next one.

Attack1: 30 Damage: 18

Attack2: 29 Damage: 13

Following Kazri's lead, Oli also attacks the next one.

Beak Attack: 9 Damage: 10

Claw Attack: 19 Damage: 7

Dex Save(DC 16) 3

Dex Save(DC 16) 17

Con Save(DC 16) 4

DC 15 Wisdom 8

DC 15 Wisdom 2

DC 15 Wisdom 17

DC 15 Wisdom 14

DC 15 Wisdom 5

vs Rhogar- Attack: 15 Damage: 18 necrotic and the target’s weapon attacks deal half damage until the start of the cultist’s next turn.

14

14

Again the party battles hard, the spiritual weapons of Krom devastating the cultists before him, the others wading in behind and taking all of the remaining cultists down.  Gorrah strikes one of the red robes and it falls unconscious.  One last red robe stands. His chanting is strong and 3 of the black robes rise again as he also sends a black bolt of ethereal energy towards Rhogar and it slams into him for 18 necrotic damage.

3 black robes, 1 red robe standing.  1 red robe unconcious

Chill (62/73), Kazri (98/114), Oli (9/42), Krom (100/104), Rhogar (52/87), Gorrah (27/27)

Reaction(Rhogar): Cast (1st level)Righteous Retribution at conscious Red Robe figured. Dex Save(DC 16) to take half of 14 Fire Damage. 

Rhogar leaves a small trail of churned stone from digging in his clawed toes from being completely knocked off his feet. But despite the obvious pain of the blow the dragonborn was yet quick to spit out words calling for divine retribution, summoning an even larger column of blue flames to rain down upon the red robe cultist.

(OOC: Not sure why the diceroller didn't work, but I rolled from the sheet and got a 15.)

After Rhogar's Righteus Retribution, Kazri utter the Command (WIS DC15) "Halt!" on the Red Robe Cultist, as she holds Oli back. "Let us stop this nonsense now!"