Attack Negation

Summary
Attack Negation (Also called Damage Negation/Cancellation/Nullification) is the ability to cancel out damage from attacks. This can include pain and/or wounds, mental and physical, they or others take.

Limitations

 * May be limited to mental or physical damage, not both.
 * May only be able to cancel out certain kinds of attacks.
 * Users will always have a limit to how much damage they can take; assuming otherwise would be a No Limits Fallacy