barak Allahu fiek may Allah bless you :)

Look Charles there are really many idioms Arabs use for blessing these are some: حفظک الله و رعاک hafezak allah wa raak \ i don't know how to write down the pronunciation so you can use Google trans for that. and it means: God saves you and take care of you. سلمک الله Sallamak allah means: God keeps you in pease اثابک الله athabak allah means: God gives you the reward. جزاک الله خیر الجزاء jazak allah khair al-jaza means:God compensates your deed in the best way. as i said there are many of them and if you are thinking of a specific situation there could be a specific idiom.

Give me your blessing = بارك لي = ba-rek lee

in which situation you want to ask for blessing ?