1.I can hear you're angry with me, what's happened that's caused you to feel like this?
2.Help me understand the things that I'm doing that are upsetting you, we can sort it out together.
Like C.Stein has said try and listen out for the underlying feeling and validate that. Try not to defend yourself against the accusation.
Think of yourself as an 'emotions detective' trying to uncover the feeling subtext to your h's accusations about you.
Even if you get the emotion wrong, it doesn't matter, he will hopefully clarify how he feels at this point.
It takes practice and inevitably you'll make mistakes.
Have you looked at the info on Validating Questions? I find them really helpful.
https://bpdfamily.com/message_board/index.php?topic=273415.0It is worth saying nothing is foolproof, sometimes the attack will still escalate and no amount of validating will work. Time to withdraw and try again when things are calmer.