Rabbi wa Rabbukallah
When your eyes fall on the new moon, you must not point to it; rather you should turn yourself towards the kiblah, raise both your hands towards the sky, and address the new moon with the following words:
بِسْمِ ٱللّٰهِ ٱلرَّحْمٰنِ ٱلرَّحِيمِ
رَبّي وَرَبّكَ اللّهُ رَبّ العَالَمِينَ.
Your and my Lord is Allah; the Lord of the worlds.
اللّهُمّ أَهِلّهُ عَلَيْنَا بِالأَمْنِ وَالإيمَانِ
O Allah: (please do) cause this crescent to carry with it for us security and faith
وَالسّلامَةِ وَالإسْلامِ
And safety and Islam
وَالمُسَارَعَةِ إلَى مَا تُحِبّ وَتَرْضَى.
And expedition to whatever You love and please.
اللّهُمّ بَارِكْ لَنَا فِي شَهْرِنَا هذَا،
O Allah: (please do) bless us in this month,
وَارْزُقْنَا خَيْرَهُ وَعَوْنَهُ،
And confer upon us with its goodness and aid,
وَاصْرِفْ عَنَّا ضُرّهُ وَشَرّهُ وَبَلاءَهُ وَفِتْنَتَهُ.
And save us from its harm, evil, ordeals, and sedition.
Another version Sahifa Alawia 31
اللَّهُمَّ أَهِلَّهُ عَلَيْنَا بِالْأَمْنِ وَالْإِيْمَانِ وَالسَّلَامَةِ وَالْإِسْلَامِ وَالْعَافِيَةِ السَّمُجَلَّلَةِ وَالرِّزْقِ الْوَاسِعِ وَ دفعِ الْأَسْقَامِ اللَّهُمَّ ارْزُقْنَا صِيَامُهُ وَ قِيَامُهُ وَ تِلاوَةَ الْقُرْآنِ فِيهِ اللَّهُمَّ سَلِّمْهُ لَنَا وَ تَسَلَّمُهُ مِنَّا وَ سَلِّمْنَا فِيهِ.