Sometimes standing up for myself means just that, not pushing back but just not letting someone's words or actions bowl me over anymore. If I don't react to angry words they just flow to the wind and the universe, no longer meaning anything to me. Angry words are about "them" and they own the behaviour. Standing up for me scoffs at resistance and defense and and makes them meaningless.
Angry actions, if physical, gets a different treatment altogether, beginning with a call to 911.
Standing up for myself means I am confident and secure in my own skin...regardless of how badly others behave around me.
Hugs