Divine Retaliation

Bright light floods an area with a 30 foot radius centered on a point within 30 feet of the caster.  Each unfriendly creature within the area must make a constitution saving throw or take 3D8 radiant damage and 3D8 lightning damage and are stunned for 1 turn.  On  a save they take half damage and are not stunned.  Undead and fiends have disadvantage on saving throws.