Beacon of Retribution

This spell envelops the target with a spirit of divine retribution that lashes out at nearby attackers. Until the spell ends, the target sheds bright light in a 10-foot radius and dim light for an additional 10 feet. As a reaction to being hit by a melee attack or touch based spell that deals damage, you can force the attacker to make a dexterity save. It takes 1d10 radiant damage on a failed save, or half as much damage on a successful one.