Bhagavad Gita, Chapter 11, Verse 25

Having seen Your mouths, fearful with tusks, blazing like Pralaya-fires, I know not the four quarters, nor do I find peace; have mercy, O Lord of the Devas, O Abode of the universe.

Even knowing exactly where he stands becomes impossible here, that real disorientation is named directly.

Arjun doesn't pretend to hold steady, he admits to losing his bearings entirely and asks plainly for mercy. Real honesty about being overwhelmed replaces any performance of calm.