Quran 2:239 from Surah Al-Baqara on Divine Marvels.
فَإِنۡ خِفۡتُمۡ فَرِجَالًا أَوۡ رُكۡبَانٗاۖ فَإِذَآ أَمِنتُمۡ فَٱذۡكُرُواْ ٱللَّهَ كَمَا عَلَّمَكُم مَّا لَمۡ تَكُونُواْ تَعۡلَمُونَ
English translation: And if you fear then (pray) on foot or riding Then when you are secure then remember Allah as He (has) taught you what not you were knowing
Transliteration: fa-in khif'tum farijalan aw ruk'banan fa-idha amintum fa-udh'kuru al-laha kama allamakum ma lam takunu ta'lamuna