Why are you worrying about something that doesn't matter so much?

Source: Tatoeba

Nothing to do with you.

Source: Tatoeba

It isn't about cost reduction.

It's not about cost reduction.

Source: Tatoeba

This has nothing to do with you.

Source: Tatoeba

None of your business!

Source: Tatoeba

I have nothing to do with the affair.

I have nothing to do with this matter.

Source: Tatoeba