I've known lots of narcissists. I used to play to their B.S., and they loved hanging around me. But it was always all about them, and they were always blameless. It gets draining, and you sort of always feel invisible. it's like they only see themselves. Now I call them on it, and they usually run.
But sometimes they don't run. Sometimes they gas light you instead—to try and put you in your place. What I recently learned is that if you gas light them back, they either buy it or back off. I'm not sure what's going on in their heads, but it works like a charm—I'm still stunned at how well it works! It's like their Kryptonite.
Or maybe they suddenly see you as a wolf, as one of them, and they back off cause they're after sheep. Whatever the case, you can't appeal to their emotions EVER. It's like they see it as a sign of weakness, and their instinct to attack just takes over.