That is what Abu Huraira reported to us from the Messenger of Allah ﷺ and he narrated (some) ahadith one of which is that the Messenger of Allah ﷺ said: I have been helped by terror (in the hearts of enemies) and I have been given words which are concise but comprehensive in meaning.
عَنْ رَسُولِ اللَّهِ ﷺ فَذَكَرَ أَحَادِيثَ مِنْهَا وَقَالَ رَسُولُ اللَّهِ ﷺ نُصِرْتُ بِالرُّعْبِ وَأُوتِيتُ جَوَامِعَ الْكَلِمِ