“We used to recite the Opening of the Book and a Surah behind the Imam in the first two Rak’ah of the Zuhr and the ‘Asr, and in the last wo Rak’ah (we would recite) the Opening of the Book.” (Using translation from Ibn Mājah 843)   

أَنْ يُقْرَأَ خَلْفِ الْإِمَامِ فِي الرَّكْعَتَيْنِ الْأُولَيَيْنِ بِفَاتِحَةِ الْكِتَابِ وَسُورَةٍ وَفِي الْأُخَرَيَيْنِ بِفَاتِحَةِ الْكِتَابِ» صحيح  

[Machine] The Prophet ﷺ used to pray a similar prayer to yours, but he used to shorten the prayer. He would recite Surah Al-Waqi'ah and similar Surahs in the Fajr prayer.  

كَانَ النَّبِيُّ ﷺ «يُصَلِّي نَحْوًا مِنْ صَلَاتِكُمْ وَلَكِنَّهُ كَانَ يُخَفِّفُ الصَّلَاةَ كَانَ يَقْرَأُ فِي صَلَاةِ الْفَجْرِ بِالْوَاقِعَةِ وَنَحْوِهَا مِنَ السُّوَرِ»  

[Machine] I asked Prophet Muhammad ﷺ about the "Mu'awwidhatayn" from the Quran. What are they? The Prophet ﷺ replied, "They are the two surahs with which the Prophet ﷺ sought refuge in the Fajr prayer."  

سَأَلْتُ رَسُولَ اللَّهِ ﷺ عَنِ الْمُعَوِّذَتَيْنِ أَمِنَ الْقُرْآنِ هُمَا؟ «فَأَمَّنَا بِهِمَا رَسُولُ اللَّهِ ﷺ فِي صَلَاةِ الْفَجْرِ»