Jacob the giant forest firefighter (not with the “Gulliver method”, but by creating a fireline)
Lord not the “Gulliver method”. XD
He could definitely help dig out a firebreak trench a lot easier than any of the Lilliputians could do it. And if they were to build him a giant bucket for it, he could easily grab a bunch of water from a lake or the ocean and spread that over the flames.