Originally Posted by
Vir Sapiens
Cursing is usually a bad idea regardless of the circumstances. It's messy and temperamental and likely to have consequences you cannot foresee. you say you have been a life long pacifist. I doubt you have the chops to make a curse actually function. If you do not have the will to inflict serious injury upon this person then you do not have the will to curse them and any attempt to do so will likely fail miserably. Your heart has to be hard and you have to want to hurt this person, not stop, not hinder but hurt. If you eschew physical violence then how can you hope to wield and control magical violence, which is what a curse is. You couldn't curse him anymore than you could stab him even if you are afraid for your life.
Passive people just aren't cut out for confrontation either physical or magical. Your best bet is to figure out a way to avoid the confrontation since you have little chance of coming out on top. Firstly he obviously fears you for some reason. I was an idiot teenager once, a big scary idiot teenager, and frankly if I had ever felt like picking on someone your size I would have just done it. I wouldn't have involved my friends because you're not a threat. There is an X factor you aren't mentioning here. Whatever it is you should exploit that to avoid the conflict and hope he grows bored of it.
Please don't be insulted by what I've written here. I have had a chance to observe passive people in combat situations. They might do fine in the training. They might be the loudest most aggressive person on the training field while they are learning to kill but, when it comes down to actually harming another human being they can't do it. It's not in their nature just as I suspect it is not in your nature to harm anyone. It's not something to be ashamed of but, it is important to recognize that aspect of yourself so you don't go doing something foolish and ineffective, like trying to curse anyone.