(Al Qamar) 54 : 8
مُهْطِعِينَ إِلَى الدَّاعِ ۖ يَقُولُ الْكَافِرُونَ هَٰذَا يَوْمٌ عَسِرٌ
Rushing to the caller; and the disbelievers will be saying: This is a difficult Day.
The believers who have seen in advance all scenes whatever will happen in the Hereafter from this world itself by utilising Adhikr will have no any panic or fear in the Hereafter. See explanation 14: 43; 23: 101; 25: 26; and 50: 22.