It was narrated from 'Aishah that:

The Prophet ﷺ used to seek refuge with Allah from the torment of the grave and the tribulation of the Dajjal, and he said: "You will be tried in your graves."

أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ يَحْيَى، عَنْ عَمْرَةَ، عَنْ عَائِشَةَ، أَنَّ النَّبِيَّ ﷺ كَانَ يَسْتَعِيذُ بِاللَّهِ مِنْ عَذَابِ الْقَبْرِ وَمِنْ فِتْنَةِ الدَّجَّالِ قَالَ وَقَالَ " إِنَّكُمْ تُفْتَنُونَ فِي قُبُورِكُمْ " .