Acts 22:25-26 ESV
But when they had stretched him out for the whips, Paul said to the centurion who was standing by, “Is it lawful for you to flog a man who is a Roman citizen and uncondemned?” When the centurion heard this, he went to the tribune and said to him, “What are you about to do? For this man is a Roman citizen.”
ESV: English Standard Version 2016