disable collision during attack anim swing

Hi , I have AI playing a swing montage when i’m being attacked by AI. It works , but when AI starts swing , its like he is colliding with me somehow, so AI only plays a little of beginning of swing montage , then keeps rapidly repeating it ,like he is then punching me instead of the the whole swing playing out. I am wanting the swing to go through me while doing damage so he will play out the whole animation each time. I suspected collision settings , but tried many , many collision changes but nothing seems to help. Is there anything else I can do?