Learn the Saint Michael Prayer in Latin in less than 5 min.

I tried my best. Gods grace is never lacking. Admirable is the Holy name of God. There probably is some tweeking that needs to be made in some of the words. Sancte Michael Archangele ora pro nobis!
Sáncte Míchael Archángele, defénde nos in proélio, cóntra nequítiam et insídias diáboli ésto præsídium. Ímperet ílli Déus, súpplices deprecámur: tuque, prínceps milítiæ cæléstis, Sátanam aliósque spíritus malígnos, qui ad perditiónem animárum pervagántur in múndo, divína virtúte, in inférnum detrúde. Ámen.