The Watcher, The Observer.
Allah is Ar-Raqib (in Arabic ٱلْرَّقِيبُ), meaning the one who sees what's hidden. He is the vigilant witness and acts as a guardian protecting His creation. It also relates to the attribute of knowledge. He is the one who sees the truth in everything. He knows the secrets of every soul, and on the day of recompense, Allah سُبْحَٰنَهُۥ وَتَعَٰلَىٰ will reward it for what it's earned.
