Shabbat Shalom is the standard greeting on Shabbat. There are many meanings One such would be When speaking to a large group: Shabbat Shalom y'all. shabbos is Yiddish for Shabbat.
shalom b'SHEM Yah'shua HaMashiach
May the Peace of the L-rd be with you on His day of rest.
I understood shalom but not the other! thanks.