The angle appeared to the 3 children at Fatima and prayed the following prayer three times:

Most Holy Trinity, Father, Son and Holy Spirit, I adore Thee profoundly, and I offer Thee the most precious body, blood, soul and divinity of Jesus Christ, present in all the tabernacles of the world, in reparation for the outrages, sacrileges and indifferences by which he himself is offended. And through the infinite merits of His most Sacred Heart and the Immaculate Heart of Mary, I beg of Thee the conversion of poor sinners.

Please say a rosary in honor of our Lady of Fatima to commemorate her first apparition dated May 13th 1917.