Final answer:
Arthur tells Merlin not to assist him against Mordred to face his destiny alone, emphasizing themes of self-reliance and honor in English literature.
Step-by-step explanation:
The question refers to a narrative element within the stories of King Arthur and Merlin, which are typically found in English literature. Arthur telling Merlin not to assist him in the battle against Mordred showcases Arthur's desire to face his destiny alone and underscores a theme of self-reliance and the hero's journey. There could be numerous reasons behind this decision, including Arthur's sense of honor, responsibility as a king, and his acceptance of the prophecy that he and Mordred were destined to face each other in battle. While specific texts might provide more context, generally, it is understood that Arthur's wish for Merlin not to intervene is a declaration of his readiness to face the consequences of his reign without reliance on magical assistance.