Invocation when he faced the enemy
Nahj al-Balāgha|Volume 1|Book 2|Chapter 15
﴿رَبَّنَا افْتَحْ بَيْنَنَا وَبَيْنَ قَوْمِنَا بِالْحَقِّ وَأَنتَ خَيْرُ الْفَاتِحِينَ﴾
Our Lord! Decide between us and between our people with truth, and You are the Best of Deciders. (Qur’ān, 7:89)