Advice regarding section 304A of medical negligence

Sir I m working in a private psychiatry hospital as an emergency medical officer and a psychiatric patient commited suicide at night in his room while alone when I was on duty. I only found out that he committed suicide by hanging from ceiling fan while I was on round . No hospital staff informed me about this .I tried to save the patient but couldn't. Now family members have registered a case under section 304 A medical negligence against the hospital owner and staff , out of which only I'm being made the scapegoat and psychiatrist, psychologist are being absolved. Family members of pt. say that pt. was kept alone in room and they were not allowed by management but management is being absolved . Hospital's lawyer says it is my bad luck that I was present on duty. Kindly guide what to do and what are my options.