Florida Statutes Title XLVI. Crimes § 776.041. Use or threatened use of force by aggressor

(a) Such force or threat of force is so great that the person reasonably believes that he or she is in imminent danger of death or great bodily harm and that he or she has exhausted every reasonable means to escape such danger other than the use or threatened use of force which is likely to cause death or great bodily harm to the assailant;  or

(b) In good faith, the person withdraws from physical contact with the assailant and indicates clearly to the assailant that he or she desires to withdraw and terminate the use or threatened use of force, but the assailant continues or resumes the use or threatened use of force.