How do you politely ask someone what something has to do with them?

[goaskmum]

For example, say a colleague work is questioning something that you’ve done but doing it in a critical way, when it clearly doesn’t concern or having anything to do with him/her, what is the best thing to say back to them rather than just saying “what has it to do with you?”

Don't ask an open question if you want to close it down. Something like 'noted' , 'thanks for that' surely would do.