Warding Smite

The next time you hit a creature with a weapon attack before this spell ends, the weapon gleams with astral radiance as you strike. The attack deals an extra 2d4 radiant damage to the target, and you are bolstered, a shimmering ward covers you, granting a bonus to your Armor Class equal to the additional damage done by this spell. The ward lasts until the beginning of your next turn. Once you have this ward you can use your reaction to point to a creature within 30ft. of you, granting them the bonus instead.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the extra damage increases by 1d4, and the range of your reaction extends by 10 ft. for each slot level above 2nd.