What does spiritu santus means?
Do you mean et Spiritus Sancti? This would mean "and of the Holy Spirit", a phrase from the Christian benediction In nomine Patris et Filii et Spiritus Sancti, "In the name of the Father, and of the Son, and of the Holy Spirit".If the first word is really es, this would mean "you [singular] are of the Holy Spirit"; "you belong to the Holy Spirit".