Russian translation help!

Can someone please let me know what the following term means? I'm not sure how to spell it but I heard on of the players on my soccer team shout it to a guy from another team who had fouled him during a game.

The word was pronounced: MEE-YET!

It could also have been: NEE-YET!

Thanks for your help.

Niet means no.

it may have been MEE-YET! then. he looked at the guy and shouted that to him with a look of anger as he limped of the field. before that he cussed him up in english.