Dua Upon Hearing Thunder

سُبْـحانَ الّذي يُسَبِّـحُ الـرَّعْدُ بِحَمْـدِهِ، وَالملائِكـةُ مِنْ خيـفَته

Subhaanal-lathee yusabbihur-ra'du bihamdihi walmalaa'ikatu min kheefatihi

Pronunciation: Glory is to Him Whom thunder and angels glorify due to fear of Him.

Reference: Al-Muwatta' 2:992