There's still time to recite this beautiful litany during the Month of the Most Precious Blood.  The ruby is the birthstone of July, a precious stone which seems to honor the Precious Blood with its bright red color.  Summer, heat.  The Blood, like drops of sweat during Our Lord's Agony.  So much to meditate upon.  And so much to be grateful for.  Our sufferings are so little compared to His.  O Lord Jesus, thank you!

Lord, have mercy on us.  Christ, have mercy on us.
Lord, have mercy on us.  Christ, hear us.  Christ, graciously hear us.
God the Father of Heaven, have mercy on us.
God the Son, Redeemer of the world, have mercy on us.
God, the Holy Spirit, have mercy on us.
Holy Trinity, One God, have mercy on us.

Blood of Christ, Only-Begotten Son of the Eternal Father, save us.
Blood of Christ, Incarnate Word of God, etc.
Blood of Christ, of the New and Eternal Testament,
Blood of Christ, falling upon the earth in the Agony,
Blood of Christ, shed profusely in the Scourging,
Blood of Christ, flowing forth in the Crowning with Thorns,
Blood of Christ, poured out on the Cross,
Blood of Christ, Price of our salvation,
Blood of Christ, without which there is no forgiveness,
Blood of Christ, Eucharistic Drink and Refreshment of souls,
Blood of Christ, River of mercy,
Blood of Christ, Victor over demons,
Blood of Christ, Courage of martyrs,
Blood of Christ, Strength of confessors,
Blood of Christ, bringing forth virgins,
Blood of Christ, Help of those in peril,
Blood of Christ, Relief of the burdened,
Blood of Christ, Solace in sorrow,
Blood of Christ, Hope of the penitent,
Blood of Christ, Consolation of the dying,
Blood of Christ, Peace and Tenderness of hearts,
Blood of Christ, Pledge of Eternal Life,
Blood of Christ, freeing souls from Purgatory,
Blood of Christ, most worthy of all glory and honor,

Lamb of God, who takest away the sins of the world, spare us, O Lord.
Lamb of God, who takest away the sins of the world, graciously hear us, O Lord.
Lamb of God, who takest away the sins of the world, have mercy on us.
Thou hast redeemed us, O Lord, in Thy Blood.  And made of us, a kingdom for our God.

Let us pray:  Almighty and eternal God, Thou hast appointed Thine Only-Begotten Son the Redeemer of the world, and willed to be appeased by His Blood.  Grant, we beseech Thee, that we may worthily adore this Price of our salvation and through Its power be safeguarded from the evils of the present life so that we may rejoice in Its fruits forever in Heaven.  Through the same Christ our Lord.  Amen.

"This Litany in honor of Jesus in His Most Precious Blood, was drawn up by the Sacred Congregation of Rites and promulgated by Pope John XXIII on February 24, 1960.  The devotion to Jesus in His most Precious Blood was first popularized by Saint Gaspar del Bufalo (1786-1837, feast Dec. 28), who founded the Missioners of the Most Precious Blood.  A partial Indulgence is granted to the faithful who recite this litany."  (Courtesy Catholic Online, Litany text from "A Prayerbook of Favorite Litanies.")