Imagine you are fighting someone over a bad problem. A friend tries to interfere. You are going to get even with the guy because of what he did in the past. You want to prevent the friend from interfering and ask them not to say or do anything because it is a personal matter. I was wondering if someone could let me know if in the self-made sentence below the bold word is natural (for indicating that you are going to get even with the guy / get settled)? If not, then what shall I use to convey exactly the same message:
- Please don't interfere. This is a personal settlement.