فَلَم تَقتُلوهُم وَلـٰكِنَّ اللَّهَ قَتَلَهُم ۚ وَما رَمَيتَ إِذ رَمَيتَ وَلـٰكِنَّ اللَّهَ رَمىٰ ۚ وَلِيُبلِيَ المُؤمِنينَ مِنهُ بَلاءً حَسَنًا ۚ إِنَّ اللَّهَ سَميعٌ عَليمٌ

You didn’t kill them, but it was God who killed them. And you threw not when you threw, but it was God who threw—to test the believers with a good test from Him. God is All-Hearing, All-Knowing.