Husband cheating wife and harassing her and her family

My husband keeps shout and fight with me and calls my parents and threaten by shouting and by doing man handling on me and throwing me out of his house couple of times. I'm a working women and I would like to stay as a family but not able to tolerate after 5years approximately. I have given to my husband 15laks of money, I have his illegal affair proofs and he never support me personally nor in my work, due to severe man handling I got scared and called 100 and we gave a compliant on him and collected all my belongings, now he's saying that he will change and to give him final chance since I also not disclosed to anyone about all our family issues, I gave him chance 3 years back itself. Now my question is, in counseling they suggest us to with an affidavit since I have life threat with my husband but again want my marriage life and not to back to my parents. So, is this affidavit will be valid? How can it be written? Will he again file any case either on me or my family? Where we have given a complaint on him already. So please suggest.