Assalamu 'Alaikum means 'Peace be on you.' Greeting of the Muslims. The response to this greeting is 'Wa 'Alaikum Assalam,' and on you be the Peace.
ASSALAMU ALAIKUM
Meaning of ASSALAMU ALAIKUM in English
Advanced Islamic English dictionary. Расширенный исламский словарь английского языка. 2012