Dominus vobiscum
Et tu spiritu tuo
As best as I can remember Latin Mass
As best as I can remember Latin Mass
The response is "Et cum spiritu tuo." (And with thy spirit.) Pretty darn close, though! Check St. John Cantius; you'll love it.
And for Sink's benefit: we also pray the Rosary before Mass -- not during. That would be rude. (Though I understand that it was a not uncommon practice in the old days.)