"And those who take allies besides Him," meaning: deities whom they worship besides Allah.
﴿وَالَّذِينَ اتَّخَذُوا مِنْ دُونِهِ أَوْلِيَاءَ﴾ يَعْنِي: آلِهَة يعبدونها من دون الله (الله