How to handle in-laws’ mental torture, abuse, and save marriage?

My in-laws have been mentally torturing my husband to leave me, which is affecting our relationship and his work. He loves his parents and will never take any action against them, blaming their age. We are newly married, and it was an arranged marriage. The emotional torture has become so severe that he has stopped trusting me and talking to me. When I insisted he talk, he got provoked and physically abused me. He is a good man and was never like this before. His parents speak negatively about me and discourage him from working towards his business. They are senior citizens as well. What should I do in this situation? Is there any way to stop this and save our marriage and mental peace?