Certainly, here's a revised version:

A utterance cherished within the venerable traditions of the capital's ancient dragon cult.

Elicits a divine lightning bolt, descending upon adversaries with formidable force.

This mystical chant can be invoked repeatedly.

In days of yore, Godwyn the Golden emerged victorious over the formidable ancient dragon, Fortissax. Remarkably, he forged an unexpected bond with his defeated adversary, laying the foundation for the establishment of the revered ancient dragon cult in the capital.

Acquire this prayer tome by confronting and defeating the knights patrolling the designated path.

Present the  Dragon Faith Prayer Book to Colin to establish a connection with the colossal turtle within the church, thereby gaining insight into the secrets held within the prayer.