Then if they deny you, [O Muhammad] - so were messengers denied before you, who brought clear proofs and written ordinances and the enlightening Scripture.
But if they cry lies to thee, lies were cried to Messengers before thee, who came bearing clear signs, and the Psalms, and the Book Illuminating.
Then if they reject thee, so were rejected messengers before thee, who came with Clear Signs, Books of dark prophecies, and the Book of Enlightenment.
In the fifth verse (184), the Holy Prophet ﷺ has been comforted by saying that he should not grieve at being falsified by his adversaries for this is something faced by all prophets in the past.