Just an update… because its been a few weeks since I first asked this question.
I still see the man in question at mass, and I am polite / courteous to him, but I’ve ceased speaking to him outside of mass. I ceased accepting his offers of help (I am still on sick leave) and I stopped returning his phone calls shortly after I started this thread.
I did try a couple more times to be friendly with him, and to stick up for myself, but he didn’t even let me finish when I was defending myself!! He simply interrupted and talked louder. He’s incredibly difficult to communicate with!

He’s continued to hurt me with his words, and I’ve now resorted to physically walking away from him without saying anything. He’s now gotten the message as he doesn’t approach me anymore. My priest said it was acceptable for me to just walk away, since he is so disrespectful. Other people do the same with him.
Its really too bad, part of me feels sorry for him… but, he
is making his own misery. Initially I was feeling guilty about not speaking to him but I’m learning I need to take care of myself and it feels great to do!

I continue to pray for him.