Feast of the Archangels St. Micahel, St. Gabriel, & St. Raphael

“The existence of the spiritual, non-corporeal beings that Sacred Scripture usually calls ‘angels’ is a truth of faith. The witness of Scripture is as clear as the unanimity of Tradition.
St. Augustine says: ‘Angel’ is the name of their office, not of their nature. If you seek the name of their nature, it is ’spirit’; if you seek the name of their office, it is ‘angel’: from what they are , ’spirit’ from what they do ‘angel.’ With their whole beings the angels are servants and messengers of God. Because they ‘always behold the face of my Father who is in heaven’ they are the ‘might ones who do his word, hearkening to the voice of his word.”
As purely spiritual creatures angels have intelligence and will: they are personal and immortal creatures, surpassing in perfection all visible creatures, as the splendor of their glory bears witness.” - Catechism of the Catholic Church 328, 329, 330

A Prayer to Saint Michael Saint Michael, Archangel, defend us in battle.Be our protection against the wickedness and snares of the Devil.May God rebuke him, we humbly pray;And do thou, O Prince of the Heavenly Host, by the power of God, thrust into hell Satan and all the other evil spirits who prowl about the world seeking the ruin of souls. Amen.
-- Pope Leo XIII

St Gabriel the Archangel PrayersO God, who from among all the Angels did choose the Archangel Gabriel to announce the Mystery of Thy Incarnation: mercifully grant that we who keep his feast on earth may feel the effect of his patronage in heaven. Who lives and reigns, with God the Father, in the unity of the Holy Spirit, world without end. Amen

St. Raphael the Archangel Prayer O glorious Archangel, St Raphael, great Prince of the heavenly court, illustrious for your gifts of wisdom and grace, guide of those who journey by land or sea, consoler of the afflicted, and refuge of sinners: I beg you to assist me in all my needs and in all the sufferings of this life, as once you did help the young Tobias on his travels. And because you are the 'Medicine of God,' I humbly ask you to heal the many infirmities of my soul, and the ills which afflict my body, if it be for my greater good. I especially ask of you an angelic purity, which may fit me to be the temple of the Holy Spirit. Be pleased, O Lord God, to send to our aid St Raphael the Archangel: and may he, who, we believe, stands forever before the throne of Your Majesty, offer unto You our humble petitions to be blessed by You. Through Christ our Lord. Amen.