Blessing - After the announcements are read, the priest blesses the congregation and everyone makes the Sign of the Cross
Dismissal - The priest tells us to 'Go in peace to love and serve the Lord and one another.' (These are the two most important commandments that Jesus gave to His disciples.) We are sent out to bring Christ to others.
Recessional or Closing Hymn - ends our celebration and helps us to leave the church with joy in our hearts. We have received the Body and Blood of our Lord, and this has made us His apostles to go forth into the world to carry the love of Jesus to everyone whom we will meet.
The Sign of the Cross
Making the sign of the cross and the invocation that is said while making this holy sign calls on our God -- the Father, His Son, and the Holy Ghost -- and is a sign of our of belief; it is both a "mini-creed" that asserts our belief in the Trinity, and a prayer that invokes God. The use of holy water when making this sign, such as we do when we enter a church, also recalls our Baptism and should bring to mind that we are born again of water and Spirit, thanks be to God.
Catholics should begin and end their prayers with the Sign of the Cross and should cross themselves when passing a church to honor Jesus in the Tabernacle, upon entering a church, and after receiving Communion. The sign is made, too, in times of trouble or fear (e.g., when receiving bad news, in times of temptation, when hearing an ambulance or fire truck go by), when passing a cemetery or otherwise recalling the dead, when seeing a Crucifix -- any time one wishes to honor and invoke God, or ward away evil, fear, and temptation. "Let us, therefore, not be ashamed of the Cross of Christ; but though another hide it, do thou openly seal it upon thy forehead, that the devils may behold the royal sign and flee trembling far away. Make then this sign at eating and drinking, at sitting, at lying down, at rising up, at speaking, at walking: in a word, at every act." (St. Cyril, Bishop of Jerusalem (d. A.D. 386))