NET
26 When the centurion heard this, he went to the commanding officer and reported it, saying, “What are you about to do? For this man is a Roman citizen.”
Darby
26 And the centurion, having heard it, went and reported it to the chiliarch, saying, What art thou going to do? for this man is a Roman.
KJV
26 When the centurion heard [that], he went and told the chief captain, saying, Take heed what thou doest: for this man is a Roman.