"与任何人无关"用英语地道点怎么说

如果是比较生气的口气用：It's not anybody else's business!/It's none of anybody else's business！
如果是某个不好的事件，例如竞标失败之类的，为了宽慰，可以说：It's not anybody's fault.（失败与任何人无关）
在有的情况下Nobody was/is involved.
总而言之这要看情况，不同情况有不同说法，还有其他情况，楼主自己去研究研究吧 :)

It has nothing to do with anyone.
It is none of anyone's business.

Has nothing to do with any person

It's none of anyone's business.