I have nothing to do with the matter.

我和那件事没有关系。

I have nothing to do with the accident.

我和这次意外事件没有关系。

You see, I have nothing to do with him.

你知道的，我与他没有关系。

You got to understand that i have nothing to do with it.

你要明白我与此事一点儿关系也没有。

These questions have nothing to do with party or ideology.

这些问题其实和党派和意识形态毫无关系。