Ragnar Lodbrok found himself in a precarious situation, buried beneath the debris at the bottom of the gaping wound torn into the Museum of Science and Technology by the Holy Lance.
Lancer Percival had already vanished. Following an unspoken command from his Master, he had departed swiftly and silently, leaving Ragnar with no one strong enough to extricate him from the wreckage.
He yearned to escape on his own, but his body refused to obey. The protective mythril tunic had preserved his life by a hair, but the combined assault of the Holy Lance's power and the final blow left him in a state where even blinking felt like a monumental effort. Even drawing a breath was a laborious task.

Fate/Lost Einherjar, Chapter 3