Exodus 9:11 in the King James Version
And the magicians could not stand before Moses because of the boils; for the boil was upon the magicians, and upon all the Egyptians.
Context
10 They took ashes of the furnace, and stood before Pharaoh; and Moses sprinkled it up toward the sky; and it became boils and blisters breaking out on man and on animal.
11 The magicians couldn’t stand before Moses because of the boils; for the boils were on the magicians and on all the Egyptians.
12 The LORD hardened the heart of Pharaoh, and he didn’t listen to them, as the LORD had spoken to Moses.