I řekli mu: "Dvourohý, věru Gog a Magog šíří spoušť po zemi; máme ti poplatek zaplatit, abys mezi námi a jimi hráz vystavěl?"
The previous text is in Czech. Here is a translation to English: They said: O Zulqarnain! surely Gog and Magog make mischief in the land. Shall we then pay you a tribute on condition that you should raise a barrier between us and them