i found d'kr you can say if you fluctuate from side to side when you wanna sleep
((لا اله الا الله الواحد القهار، رب السموات والارض وما بينهما العزيز الغفار))
articulation>> la illaha illa Allah al-wa7ed Al-qhhar, rab al-smawat wala'rd wma bynhoma al3zez alghfar.
Asalam Alaykum Warakmatulah Wabarkatuh
So it's like dhikr, right?