فَاُلۡقِيَ السَّحَرَةُ سُجَّدًا قَالُوۡ٘ا اٰمَنَّا بِرَبِّ هٰرُوۡنَ وَمُوۡسٰي

So the magicians fell down in prostration. They said, "We have believed in the Lord of Aaron and Moses