That's the thing though, why would a pacifist look for danger/violence/hostile/etc. situations? He'd probably try to avoid those, unless there was simply no other option. That's like a Monk trying to pick a fight.
Because he has to save the world or something. Jesus, I dunno'. If the opening is anything like it was in Oblivion, with the plot being shoved into your face immediately, then it wouldn't make much sense to ignore it. Works better in Morrowind, where the beginning of the game is calm and the plot advancement is about as quick as a snail.
Unless they are very psychologically weak and you are a master psychologist, I don't believe someone could really talk someone into killin themselves, especially if you were aware of exactly what they're trying to do, and especially if you had a weapon at your disposal and wanted to get rid of them.
Magic/Speechcraft level of 1,376,867,234. The idea is that in that sort of situation, if you're attempting that (seeing as it's the endgame) you
better be damn good at what you're doing. otherwise you have to endure that stupid fight where people respawn and you're going to look very silly when you die.
Then again Gandhi may just let himself get killed Obi Won style.
In death he'll be stronger than you could ever imagine.