O Jesu mi - Fatima Prayer in Latin - Oratio Fatimae

O Jesu mi, ignosce nobis, libera nos ab igne inferni,
ad caelum trahe omnes animas, praesertim maxime indigentes.
This is likely to be the closest thing to an official Latin Fatima Prayer, probably being from Bishop José Alves Correia da Silva, the Bishop of Fatima at the time.
Here's a copy:
https://littleoffice.brandt.id.au/pdf/rosary/o-jesu.pdf
and here it is in Gregobase:
https://gregobase.selapa.net/chant.php?id=18639