Montana Criminal Jury Instructions (M.C.J.I.) 2009 (2017 Supp.)
Chapter 3. Justifiable Use of Force
MT 3-104. Use of Force by Aggressor
The use of force in defense of a person is not available to a person who purposely or knowingly provokes the use of force against himself/herself unless:
 such force is so great that he/she reasonably believes that he/she is in imminent danger of death or serious bodily harm and that he/she has exhausted every reasonable means to escape such danger other than the use of force which is likely to cause death or serious bodily harm to the assailant.
 in good faith he/she withdraws from physical contact with the assailant and indicates clearly to the assailant that he/she desires to withdraw and terminate the use of force but the assailant continues or resumes the use of force.