You surround yourself in a shimmering, undulating layer of bristling arcane energy. Until the spell ends, attacks made against you have disadvantage, and when you are hit by an attack, if the attacker is within 60 feet of you, it must make a Dexterity saving throw. The attacker takes 5d10 force damage on a failed saving throw, or half as much damage on a successful one.

Once you have been hit by six attacks, the spell ends.