Is a man allowed to defend himself from a woman?

Is a man allowed to defend himself from a woman in Islam? what if a woman is repeatedly punching or choking the men and the man is getting really injured. how do you defend yourself? and what if me as a boy is getting repeatedly choked AND punched and I am getting severely injured and the girl is bigger and stronger than me)just to let you know I'm kinda a small kid) so how do I defend myself or do I defend myself? Do I not do anything because its the opposite gender or not?