Allah defends those who believe.
Protection for the trusting, none for the treacherous
Ibn Kathir says Allah protects, guards and supports those who trust Him and turn to Him, against the plots of wrongdoers. He dislikes treachery in promises and ingratitude for blessings. The exiled believers in Madinah needed to hear this.
Someone at work is talking about you behind your back, and you lie awake planning your defense. The verse says you are not defending yourself alone. Your part is to stay honest and grateful.
If I do not fight every battle myself, I will be crushed.
Allah defends those who believe; I stay trustworthy and thankful.
Hand one worry about other people's plots to Allah in a short dua tonight.