إِنَّمَا ٱلۡمُؤۡمِنُونَ ٱلَّذِينَ إِذَا ذُكِرَ ٱللَّهُ وَجِلَتۡ قُلُوبُهُمۡ وَإِذَا تُلِيَتۡ عَلَيۡهِمۡ ءَايَٰتُهُۥ زَادَتۡهُمۡ إِيمَٰنٗا وَعَلَىٰ رَبِّهِمۡ يَتَوَكَّلُونَ ٢
The believers are only those who, when Allāh is mentioned, their hearts become fearful, and when His verses are recited to them, it increases them in faith; and upon their Lord they rely -
Translation: Saheeh International (English)
Each word's meaning and sound
The true believers are those who, when Allah is mentioned, feel awe of Him in their hearts, which make them do good actions. When the verses of Allah are read to them they reflect on them and it increases their faith, and they rely on Allah alone to bring them what is in their interests and to protect them from what is bad for them.
Al-Mukhtasar in interpreting the Noble Quran