1) It's none of your business.; It has nothing to do with you.
这事与你无干。
2) It has nothing to do with me.
这事与我无干。
3) This does not apply to you.
这与你无关。
4) This has nothing to do with you.
这与你不相干。
5) It doesn't affect me/matter to me.
这事与我不相干。
6) It' s no concern of mine, ie I am not involved in it or I have no responsibility for it.
这事与我无关.
参考词条