A person is justified in using force upon another person in order to defend anyone else if: 1. The person defended would be justified in defending himself; and 2. The person coming to the defense has not, by provocation or otherwise, forfeited the right of self-defense.
Defense of others
N.D.C.C. § 12.1-05-04, under Justification - Excuse - Affirmative Defenses.
N.D.C.C. § 12.1-05-04