expression
don't worry about it; not at all; forget about it
Polite phrase used to reassure someone that something is not a problem, similar to 気にしないで but more formal. Often used when someone apologizes or expresses concern.
See also: 気にしないで
「遅れてすみません」「お気になさらず」
"Sorry I'm late." "Don't worry about it."
お気になさらず、大したことではありませんから。
Please don't worry about it; it's nothing serious.