Final answer:
The clearing of the arena by Nic from Radulph's men would require contextual knowledge from a specific novel or story, which has not been provided. Typically, such actions involve strategy, cunning, or physical skill.
Step-by-step explanation:
The question seems to be referencing a plot point from a novel or story. To answer how Nic clears the arena of Radulph's men, we would need to know the context and the specific actions taken by the character Nic. Since this sounds like it could be a question about a scene in a book, the most accurate response would require specific knowledge of that book. Without the context of which book or story this is from, we cannot provide a detailed answer. However, if this is a fictional action sequence, typically a character might use strategy, cunning, physical skill, or allies to clear an area of adversaries. Those could include setting a trap, outsmarting the opponents, or directly confronting them in battle.