What does this farsi saying mean ما را به خیر تو امید نیست شر مرسان?

Answer 1

In Farsi sometimes we respect ourselves and instead of saying "I" or "me" we say "we"

We don't have hope to get any good from you. Send no evil.

It is hard to translate stuff like this into English. But I tried my best. I tried to translate word by word.

Answer 2

Samantha before me did a pretty good translation...basically the remark means "not having hope in receiving a good deed from you, don't send tribulation our way."