They were counted worthy to suffer shame (κατηξιώθησαν ἀτιμασθῆναι)
This is an instance of what rhetoricians style an oxymoron, from ὀξύς, sharp, and μωρός, foolish; a pointedly foolish saying, which is witty or impressive through sheer contradiction or paradox, as laborious idleness, sublime indifference. In this case the apostles are described as dignified by indignity.