﴿ وَقَالَ ٱلَّذِىٓ ءَامَنَ يَٰقَوْمِ إِنِّىٓ أَخَافُ عَلَيْكُم مِّثْلَ يَوْمِ ٱلْأَحْزَابِ ﴾

“Thereupon exclaimed he who had attained to faith: “O my people! Verily, I fear for you the like of what one day befell those others who were leagued together [against God’s truth] –”

Please check ayah 40:35 for complete tafsir.