Saying "May Allah protect you" (Hafizak Allah)

Abu Qatadah said:
The Prophet ﷺ was on journey. The people became thirsty, and they went quickly. I guarded the Messenger of Allahﷺ on that night. He said: May Allah guard you for the reason you have guarded His Prophet!

حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا حَمَّادٌ، عَنْ ثَابِتٍ الْبُنَانِيِّ، عَنْ عَبْدِ اللَّهِ بْنِ رَبَاحٍ الأَنْصَارِيِّ، قَالَ حَدَّثَنَا أَبُو قَتَادَةَ، أَنَّ النَّبِيَّ ﷺ كَانَ فِي سَفَرٍ لَهُ فَعَطِشُوا فَانْطَلَقَ سَرَعَانُ النَّاسِ فَلَزِمْتُ رَسُولَ اللَّهِ ﷺ تِلْكَ اللَّيْلَةَ فَقَالَ " حَفِظَكَ اللَّهُ بِمَا حَفِظْتَ بِهِ نَبِيَّهُ " .