They had already desired dissension before and had upset matters for you until the truth came and the ordinance of Allah appeared, while they were averse.
The Saheeh International Quran Translation
لَقَدِ ٱبْتَغَوُا۟ ٱلْفِتْنَةَ مِن قَبْلُ وَقَلَّبُوا۟ لَكَ ٱلْأُمُورَ حَتَّىٰ جَآءَ ٱلْحَقُّ وَظَهَرَ أَمْرُ ٱللَّهِ وَهُمْ كَٰرِهُونَThey had already desired dissension before and had upset matters for you until the truth came and the ordinance of Allah appeared, while they were averse.