﴿ وَٱصْبِرْ وَمَا صَبْرُكَ إِلَّا بِٱللَّهِ ۚ وَلَا تَحْزَنْ عَلَيْهِمْ وَلَا تَكُ فِى ضَيْقٍۢ مِّمَّا يَمْكُرُونَ ﴾

“Endure, then, with patience (all that they who deny the truth may say] -always remembering that it is none but God who gives thee the strength to endure adversity -and do not grieve over them, and neither be distressed by the false arguments which they devise:”

Please check ayah 16:128 for complete tafsir.