Just my opinion, but as long as your partner is not willing to take full responsibility for his violent behaviour, you and your daughter are in danger. Of course interaction is two-way - that does not absolve him from being physically violent with you. As long as he is justifying his behaviour by saying it's 50% your fault, you are in danger.

I think it would be safer to maintain the current separation you have from him, and see a therapist ASAP, so you have a more robust support system. I may be worth considering that your daughter may also benefit from therapeutic input, if she has witnessed any abuse, been subject to it directly, or indirectly through its effects on her mother.

You have been with him long enough to know what to expect if you stay.