This is what can happen when a male Narcissist is confronted with proof that he has been cheating. The male Narcissist becomes enraged and tries to strike his female source of Narcissistic Supply. The female is having none of that and proceeds to put the male Narcissist in his place.
If only life worked that way.
Your best and safest bet,
is to have “No Contact” with the Narcissist.
Disclaimer: I am in no way suggesting to get into a physical fight with anyone, let alone a Narcissist. I was trying to be funny in this post. Your sense of humour may vastly differ. I do not mean to offend anyone or get anyone hurt.