From your description, it sounds to me that this person’s physical abuse has ended. If not, that is the first line of defense, to protect yourself and others by getting help from the appropriate social service agency in your area. If the abuse is over, then I recommend that you start forgiving him for his past unjust behavior toward you first and then toward loved ones who were abused. You can forgive him for hurt to others because this hurts you to see them emotionally and physically wounded.
As you forgive him for past injustices, your anger is likely to reduce. Right now you are classically conditioned to his past behavior. You associate certain things now (a slammed cabinet door) with his past violence. That link between loud noises and feeling unsafe is likely to ease for you as you forgive him. Please keep in mind that it could take months of forgiveness work to accomplish your goal of beginning to feel safe. This is ok. A few months or more is better than living with years of resentment and the unsafe feeling that accompanies this. I wish you the very best in your forgiveness journey.