Empyrean Armor

Choose up to five willing creatures within range. Each creature becomes surrounded by a set of spectral, radiant armor. For the spell’s duration, each creature gains a +2 bonus to AC and resistance to radiant or necrotic damage (your choice when you cast the spell). Whenever a creature hits a creature protected by this spell with a melee attack, it takes 2d4 damage of the chosen type.

At Higher Levels. When you cast this spell using a spell slot of 7th level or higher, you can target one additional creature and the damage dealt by the armor increases by 1d4 for each spell slot level above 6th.