You rather end up being killed than divorcing? It’ll only get worse and he may start to take it out on your girls. Think about them. Your job is to protect them from everybody, they daddy included. You deserve so much better and to be in a loving healthy relationship. Sign those papers.
Do what you have to do. He will just keep hurting you and will never stop if you keep on forgiving him. Think about your kids. One day he can end up killing you and then what will happen to them?...Hopefully you figure things out
Think of your kids. The choice should be easy. My very first memory growing up is my biological dad back handing me. Another first is him beating the shit out of my mom. If your husband hits you, he will hit your kids too. Don't let your kids go through that shit. It isn't only you going through this.