There is such a saying on Miracle Continent.
On the battlefield, the only one who can deal with magicians is magicians.
Because the strategic deterrence of magicians is so great, although their attack range is not as far as that of archers, they have a large range of lethality that archers cannot achieve. Especially the large-scale magic array formed by the mage army is even more terrifying - but in a war of this level, the magicians are not used to kill each other, but to contain them.
Therefore, the correct understanding of this sentence on Miracle Continent is that only magicians can interfere with the magician's magic circle on the battlefield.