In the context of the sentence you provided, it seems there may be a typo, as the word "battle" does not appear in your sentence. However, if you're looking for an inference based on the phrase "the red land" referring to a "barren desert" that "protected Egypt," one could interpret that the desert served as a natural barrier against invaders, which is a defensive or protective aspect.
If your intention was to inquire about a different word or concept, please clarify so I can assist you further!