﴿ ٱلَّذِينَ صَبَرُوا۟ وَعَلَىٰ رَبِّهِمْ يَتَوَكَّلُونَ ﴾

“those who, having attained to patience in adversity, in their Sustainer place their trust!”

(Such as are steadfast) towards the harm of the disbelievers (and put their trust in Allah) and not in any one beside Him; this refers to 'Ammar and his fellow believers.