According to ChatGPT:
ああ!! レイリーに 並ぶ 海賊王の 右腕…!! ああ!! – "Ah!!" (expressing surprise or realization)
レイリーに並ぶ – "on par with Rayleigh" or "standing alongside Rayleigh"
並ぶ (narabu) literally means “to line up with,” “to stand alongside,” or “to rival/be on equal footing with.” 海賊王の右腕 – "the right-hand man of the Pirate King"