KJV:
And took off their chariot wheels, that they drave them heavily: so that the Egyptians said, Let us flee from the face of Israel; for the LORD fighteth for them against the Egyptians.
NASB:
He caused their chariot wheels to swerve, and He made them drive with difficulty; so the Egyptians said, "Let us flee from Israel, for the LORD is fighting for them against the Egyptians."