Wiki posts help

Hello, I was wondering if there a way to limit on who can edit a Wiki thread. I make helpful wiki guides with information, but I’m in a constant battle with “trolls” or people who purposely alter my thread in order to sabotage it. I have a very small group who I trust with editing my wikis, but we end up disabling the wiki function due to these trolls. Is there another solution besides having to completely disable the wiki?

Admin, Site Settings, “min trust to edit wiki post”