سُبْـحانَ الّذي يُسَبِّـحُ الـرَّعْدُ بِحَمْـدِهِ، وَالملائِكـةُ مِنْ خيـفَته
Subḥāna ‘l-ladhī yusabbiḥur-ra`du bi ḥamdihi wa ‘l-malā'ikatu min khīfatih.
Glory is to Him Whom thunder and angels glorify due to fear of Him.
Whenever Abdullah bin Zubair (RA) would hear thunder, he would abandon all conversation and say this supplication. See Al-Muwatta' 2/992. It was graded authentic by Al-Albani as a statement of Abdullah bin Zubayr only.