If you're referring to the four obelisks puzzle, when you finish the fight, you'll see four tablets with the correct order in which to light up the obelisks. If I remember correctly, the right order is: Serpent, Moon, Bird, Sun.
Oh boy! I see your very puzzled. You have to read the book in the middle.... Then (example) "the moon shines bright but the suns are down till dawn" So its supposed to be a mystery, not very hard one but uh im sure your smart enough to figure it out. (well at least i hope so !) Sooooo that means light up ALL the moons and make ALL the suns not glowing. Krok is a very puzzling world but trust me if you have trouble here, it will take you along time to finish the game.... !