Armor of Ifrit

You become shrouded in a protective magical force, manifesting as a cloud of shadowy spectral flames and ash.  The cloud surrounds your form, obscuring your physical presence on this plane.  You gain +2 to your Armor Class for the duration of the spell.  If a creature hits you with a melee attack while this spell is active, the creature takes 3 fire damage.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the fire damage increase by 3 for each slot.