وَإِن يُكَذِّبوكَ فَقَد كُذِّبَت رُسُلٌ مِن قَبلِكَ ۚ وَإِلَى اللَّهِ تُرجَعُ الأُمورُ

If they reject you, messengers before you were also rejected. To God, all matters are returned.