Khosrow Prays Behind the Lines

From C4.10, The Armies Meet in Battle. It illustrates C4.10.18–22:

C4.10.18
Khosrow, attended by a servant tried,Withdrew behind the rear and stepped aside.
C4.10.19
He dismounted there and thanked the Maker’s grace,Then laid upon the darkened dust his face.
C4.10.20
He said: “O Judge, all-holy, just, and true,The wrongs that I have borne are known to You.
C4.10.21
For many days I bore the wrong he wrought;Requite in blood the suffering he brought.
C4.10.22
Guide me, oppressed by tyranny and wrong,And let Your justice make my spirit strong.”