Deportability is established by a conviction for a "crime" of domestic violence. A domestic violence protective order issued by a family court is not the same as a criminal conviction and therefore not grounds for deportability.
However, you should make sure that no criminal proceedings are being conducted or started in your case. It is very important to understand the full range of legal proceedings you are in, so that you will not be blindsided by something you don't expect. I suggest you obtain legal representation by an attorney.
Wolf W. Kaufmann
Southern California Immigration Attorney
This post is intended to be of general educational nature only and cannot be a substitute for detailed legal advice in your case. No attorney-client relationship is being created by this post.