Translated from Ustadz Firanda Andirja's Indonesian commentary (Bekal Islam). Quoted verses, hadith and duas keep their Arabic; where the commentary gave its own Indonesian rendering of them, that rendering is not translated and is marked [translation not shown].
This dua is the Messenger of Allah's counsel to Mu'adh bin Jabal never to leave it at the end of every prayer, because it contains a servant's complete reliance of the heart on his Creator in all his affairs. When a servant asks Allah for help in all his affairs, it shows how weak he is; even being able to constantly make dhikr, or remember his Creator, to give thanks for every favour that has been given to him, and to worship well, all of it depends on Allah's help. When a servant realises that there is no might or power that can give him the strength to do all of that, then wonder at himself and self-admiration over everything he has managed to do disappear from him, because all of it depends on what Allah gives him. And this is one of the meanings contained in the verse we often recite in our prayer, “إياك نستعين” [translation not shown], because true help comes only from Allah.