I also had the misfortune of working with a jew in a job, once. He was honestly the most disgusting, weird, dirty and annoying person I have ever worked with. He tried to push his agenda onto me and others, and frankly, I wasn't having any of it. I would just ignore him.
Luckily, he ended up resigning and left the company. I wonder if this was a result of me doing the FRTR. A lot of people there didn't even like him, anyways.
My honest advice, in addition to the above, is simply just to keep things strictly work-related and professional, and don't say or share anything that could either be used against you, or get you in trouble. As a matter of fact, I wouldn't even share anything personal at all. Unfortunately in this society, it is likely you will bump into one at a job, here and there; you can't avoid them always. Just be careful, and avoid playing their games.