おかまいなく
please don't fuss over me; don't go to any trouble; don't bother
Also written お構い無く、御構い無く、御構いなく
Expression
お構かまいなく。
Don't mind me.
どうぞお構かまいなく。
Please don't bother.
私わたしの事ことはお構かまいなく。
Please don't go out of your way on my account.