Amsayna wa amsal-mulku lillahi rabbil-ʿalamin

أَمْسَيْنَا وَأَمْسَى الْمُلْكُ لِلَّهِ رَبِّ الْعَالَمِينَ، اللَّهُمَّ إِنِّي أَسْأَلُكَ خَيْرَ هَٰذِهِ اللَّيْلَةِ، فَتْحَهَا وَنَصْرَهَا وَنُورَهَا وَبَرَكَتَهَا وَهُدَاهَا، وَأَعُوذُ بِكَ مِنْ شَرِّ مَا فِيهَا وَشَرِّ مَا بَعْدَهَا

Transliteration

Amsaynaa wa amsal-mulku lillaahi rabbil-ʿaalameen, allaahumma innee asʾaluka khoyra haadhihil-laylah, fathahaa wa nasrahaa wa noorahaa wa barakatahaa wa hudaahaa, wa aʿoodhu bika min sharri maa feehaa wa sharri maa baʿdahaa.

Meaning

We have reached the evening, and in the evening the dominion belongs to Allah, the Lord of the universe. O Allah! I ask You for the good this day contains, for conquest, victory, light, blessing and guidance during it; and I seek refuge in You from the evil it contains and the evil contained in what comes after it.

Say it: once
When: Any time