Invocation when he faced the enemy
Nahj al-Balāgha|Volume 1|Book 2|Chapter 15
اَللَّهُمَّ إِنَّا نَشْكُوا إِلَيكَ غَيْبَةَ نَبِيِّنَا، وَكَثْرَةَ عَدُوِّنَا، وَتَشَتُّتَ أَهْوَائِنَا.
O’ my Allāh ! we complain to You of the absence of our Prophet, the numerousness of our enemy and the diffusion of our passions.