Japanese phrase
お任せします。 o maka se shi ma su
Meaning
I will leave it up to you.
When to use it
Leaves the choice or decision to the other person. It is polite and often used when the speaker is happy to accept the other person's judgment.
Example dialogue
どれにしますか？ do re ni shi ma su ka
Which one would you like?
お任せします。 o maka se shi ma su
I will leave it up to you.