Narrated 'Abd al-Rahman b. Samurah : During the lifetime of the Messenger of Allah (peace be upon him) I was shooting some arrows when an eclipse of the sun tok place. I, therefore , threw them (the arrows) away and said: I must see how the Messenger of Allah (ﷺ) acts in a solar eclipse today. So I came to him; he was standing (in prayer) raising his hands, glorifying Allah, praising Him, acknowledging that He is the only Deity, and making supplication till the sun was clear. He then recited two surahs and prayed two rak'ahs.
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا بِشْرُ بْنُ الْمُفَضَّلِ، حَدَّثَنَا الْجُرَيْرِيُّ، عَنْ حَيَّانَ بْنِ عُمَيْرٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ سَمُرَةَ، قَالَ بَيْنَمَا أَنَا أَتَرَمَّى، بِأَسْهُمٍ فِي حَيَاةِ رَسُولِ اللَّهِ صلى الله عليه وسلم إِذْ كُسِفَتِ الشَّمْسُ فَنَبَذْتُهُنَّ وَقُلْتُ لأَنْظُرَنَّ مَا أُحْدِثَ لِرَسُولِ اللَّهِ صلى الله عليه وسلم فِي كُسُوفِ الشَّمْسِ الْيَوْمَ فَانْتَهَيْتُ إِلَيْهِ وَهُوَ رَافِعٌ يَدَيْهِ يُسَبِّحُ وَيُحَمِّدُ وَيُهَلِّلُ وَيَدْعُو حَتَّى حُسِرَ عَنِ الشَّمْسِ فَقَرَأَ بِسُورَتَيْنِ وَرَكَعَ رَكْعَتَيْنِ .
sunnah.com