The less you say in the moment ("Yes or no questions get yes or no answers"), the more time you give yourself to decide what you want after calming down and thinking through the situation.
"I am not sure" "I will let you know when I have decided" "That does not work for me" "I need time to think about that" "I like it that way" "I prefer ..." "I will send you an email" "I will text you" "My lawyer will contact you" "I am thinking" "I am busy" "I have something I have to take care of" "I decided..."
Those are right off the top of my head. Wrap your head around those kind of statements.
Even in good relationships, simple and direct works.
Woman "I don't know..what to wear..should I wear jeans or a dress" Man:"Wear the black sexy dress"
"What is best for my kids is best for me" Amor Fati Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712