回答

・That's not your concern.
・have nothing to do with

concern有"擔心"或 "與...有關"的意思。
That's not your concern. 表示"這與你無關"。

Don't worry about what happened yesterday because that's not your concern.
『昨日發生的事與你無關，所以不需要擔心』

have nothing to do with "～與...無關"
I have nothing to do with the Incident.
『我與該事件無有任何關係』

有幫助｜0