This sentence does not exist in the animation, but only in fate/stay night
(a text adventure game published by TYPE-MOON) games and novels.
In the original text of Fate's novel, this sentence was said by Shining when he was attacked by black mud, because black mud, as the evil in this world, has absolute corrosive power on heroic spirits. Once the heroic spirits come into contact with it, Black mud will be blackened, such as black SABER.
But after Shining encountered the corrosion of black mud, because of his strong spiritual will, he was not blackened, because there is this sentence - "The king will bear it, the king will allow it, the king will bear this "World."
Extended information:
As a king, Gilgamesh (Golden Shining) has absolute self-confidence. He proudly faces the rude "bastards" and takes all the treasures. The prototype of the tool is opened with "King's Treasure" and shoots at the enemy like bullets. The whole process only consumes a very low amount of magic power. The actual magic power used is only the activation amount of the King's Treasure. Depending on the mood, the magic power will be poured out from behind the opponent without warning to kill.
Because he has the prototype of all Noble Phantasms, he can attack the weak points of any enemy. Because of this, Gilgamesh can fight advantageously against most Servants. Although he does not like close combat, he relies on With the combination of Noble Phantasm armor and various weapons, he can also deal with opponents in close combat.