Armor of enlightment

As you apply the glow dust, your armor glows with subtle metallic shine. The glow coalesces into a layer of semi-solid light absorbing attacks and producing intense radiation when hit. You gain 5 temporary hit points and when hit in melee, the attacker suffers 5 points of radiant damage.

Casting this spell using a spell slot of 2nd level or higher adds 5 temporary hit points and 5 damage per slot level. The spell ends after one hour or the loss all temporary hit points are spent.