How do you say no trouble in Hebrew?
If you mean "no trouble" as a response to "thank you", there is
no equivalent phrase. You would just say bevakasha (בבקשה) or
al lo davar (על לא דבר), both of which just mean "you're
welcome".
If you mean "no trouble" literally, as in "there isn't any
trouble", it is eyn tsarah (אין צרה).