This isn't a perfect example, but -
I was at a personal development workshop a couple of weeks ago.
One of the participants was expressing a lot of fake positivity. I (and a lot of the other participants) got a bit annoyed by that - it felt to us like he was lying every time he opened his mouth. At dinner he asked for "honest feedback" on why other people didn't like him, and what he could do to be more appreciated by the group. He got what he asked for. Several people told him how they felt when he talked. He got really upset hearing that - saying he was being bullied by the whole group. Something he's experienced a lot of throughout his life.
How can you be honest with someone like this without him being able to turn it into an attack? I don't know if you can. The shadow part of him is too clever. Should we have refused to give him the feedback he asked for? The same pattern played out in small ways a few more times over the next few days. Someone would say something in the group which related to him in some way. The next morning he'd try on a versions of the previous day's events in which everyone else's stories were about him. And he was always the victim.
In a work setting where people don't have complete information, he'd be a menace. He could turn anything he didn't like into an instance of "bullying and harassment". I don't think he does it on purpose, but that doesn't make it any better.
Even weeks after the retreat I'm still thinking about him - I have no idea how I'd deal with someone like that if they were in my life. A soft "believe all victims of harassment" approach would encourage his narcissism. But his pain still seemed real. It felt like I kept having to choose between self abandonment (staying small, lying about my feelings) or risking hurting this guy. I hated it.