Pronunciation: Allahumma qi-ni 'a-dha-bak, yaw-ma tab'a-su i-ba-dak
Meaning: O Allah Save me from your punishment, the day You resurrect Your slaves
Virtue: It was narrated from 'Abdullah that: whenever the Prophet (saas) went to his bed, he would put his hand - meaning his right hand - beneath his cheek then say: "Allahumma qini 'adhabaka yawm tab'athu - [or: tajma'u] - 'ibadaka (O Allah, save me from Your punishment on the Day when You resurrect - or gather - Your slaves)."
Reference: Sunan Ibn Majah 3877