Divine Radiance

Bright light shines from you in a 15-foot radius sphere. Until the spell ends, the aura moves with you, centered on you. Whenever an enemy enters the sphere for the first time on a turn or starts its turn there, it must make a Constitution saving throw. On a failed save the enemy takes 2d6 radiant damage. On a successful save, it takes half as much damage.  

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for each slot level above 2nd.