Exodus

When a creature within 5 feet of you hits you with a melee attack you may use your reaction to teleport to an unoccupied space up to 15 feet away from it as a blast of radiant damage bursts from you. Each creature within 5 feet of you must make a dexterity saving throw on a failed save the creature takes 1d6 radiant damage.

This damage is doubled if the attacking creature is a fiend or undead.