This prayer of Pope Pius XII is truly blasphemous.
The worship of Mary and worshiping statues of Mary (and other saints and angels) is obvious in popular Roman Catholicism, even though the RCC officially denies that they give Latria/adoration to Mary, they practically do. Prayers of Popes to Mary in history are full of high worship and adoration and asking her to do things that only God - the Father, the Son, and the Holy Spirit can do. The distinction between latria and dulia and hyper-dulia is a theological word game and sophistry. They are deceived.
PRAYER OF POPE PIUS XII This prayer, dedicated to Mary Immaculate, was composed by the Pope for the Marian Year (December 8, 1953-December 8, 1954), which was proclaimed to mark the centenary of the definition of the dogma of the Immaculate Conception.
"Enraptured by the splendor of your heavenly beauty, and impelled by the anxieties of the world, we cast ourselves into your arms, 0 Immacuate Mother of Jesus and our Mother, Mary, confident of finding in your most loving heart appeasement of our ardent desires, and a safe harbor from the tempests which beset us on every side.
Though degraded by our faults and overwhelmed by infinite misery, we admire and praise the peerless richness of sublime gifts with which God has filled you, above every other mere creature, from the first moment of your conception until the day on which, after your assumption into heaven, He crowned you Queen of the Universe.
O crystal fountain of faith, bathe our minds with the eternal truths! O fragrant Lily of all holiness, captivate our hearts with your heavenly perfume! 0 Conqueress of evil and death, inspire in us a deep horror of sin, which makes the soul detestable to God and a slave of hell!
O well-beloved of God, hear the ardent cry which rises up from every heart. Bend tenderly over our aching wounds. Convert the wicked, dry the tears of the afflicted and oppressed, comfort the poor and humble, quench hatreds, sweeten harshness, safeguard the flower of purity in youth, protect the holy Church, make all men feel the attraction of Christian goodness. In your name, resounding harmoniously in heaven, may they recognize that they are brothers, and that the nations are members of one family, upon which may there shine forth the sun of a universal and sincere peace.
Receive, O most sweet Mother, our humble supplications, and above all obtain for us that, one day, happy with you, we may repeat before your throne that hymn which today is sung on earth around your altars: You are all-beautiful, O Mary! You are the glory, you are the joy, you are the honor of our people! Amen."
Rob Zins, at the 14:43 mark on this video, going through Walter Martin's book on Roman Catholicism (no longer in print), walks through the prayer of Pius XII and shows just how unbiblical and blasphemous it is, and asks, "Can you pray a better prayer to Jesus or God the Father?" (I don't know much about Rob Zins, but I think he really nailed it on this issue.)
At the 34:40 mark, he mentions a pamphlet produced by Roman Catholics with the Imprimatur of Cardinal Spellman (I assume this is Cardinal Francis Spellman (1889-1967) Archbishop of New York - google him. He was not without controversy.) It says that Mary is the ONE mediator between Christ and mankind. Wow. And it takes terms for Jesus and applies them to Mary - "There is one mediator between Christ and men, the Holy Mother Mary. Mary is the way and the truth and the life. No man comes to Jesus except by Mary." Wow. Blasphemous.