33:10
إِذْ جَاؤُوكُم مِّن فَوْقِكُمْ وَمِنْ أَسْفَلَ مِنكُمْ وَإِذْ زَاغَتْ الْأَبْصَارُ وَبَلَغَتِ الْقُلُوبُ الْحَنَاجِرَ وَتَظُنُّونَ بِاللَّهِ الظُّنُونَا
Behold! they came on you from above you and from below you, and behold, the eyes became dim and the hearts gaped up to the throats, and ye imagined various (vain) thoughts about Allah!
33:11
هُنَالِكَ ابْتُلِيَ الْمُؤْمِنُونَ وَزُلْزِلُوا زِلْزَالاً شَدِيداً
In that situation were the Believers tried: they were shaken as by a tremendous shaking.
33:18
قَدْ يَعْلَمُ اللَّهُ الْمُعَوِّقِينَ مِنكُمْ وَالْقَائِلِينَ لِإِخْوَانِهِمْ هَلُمَّ إِلَيْنَا وَلَا يَأْتُونَ الْبَأْسَ إِلَّا قَلِيلاً
Verily Allah knows those among you who keep back (men) and those who say to their brethren, "Come along to us", but come not to the fight except for just a little while.
33:19
أَشِحَّةً عَلَيْكُمْ فَإِذَا جَاء الْخَوْفُ رَأَيْتَهُمْ يَنظُرُونَ إِلَيْكَ تَدُورُ أَعْيُنُهُمْ كَالَّذِي يُغْشَى عَلَيْهِ مِنَ الْمَوْتِ فَإِذَا ذَهَبَ الْخَوْفُ سَلَقُوكُم بِأَلْسِنَةٍ حِدَادٍ أَشِحَّةً عَلَى الْخَيْرِ أُوْلَئِكَ لَمْ يُؤْمِنُوا فَأَحْبَطَ اللَّهُ أَعْمَالَهُمْ وَكَانَ ذَلِكَ عَلَى اللَّهِ يَسِيراً
Covetous over you. Then when fear comes, thou wilt see them looking to thee, their eyes revolving, like (those of) one over whom hovers death: but when the fear is past, they will smite you with sharp tongues, covetous of goods. Such men have no faith, and so Allah has made their deeds of none effect: and that is easy for Allah.