The verse: "So eat of (meats) on which Allah's name hath been pronounced" and the verse: "Eat not of (meats) on which Allah's name hath not been pronounced" were abrogated, meaning an exception was made therein by the verse: "The food of the people of the Book is lawful unto you and yours is lawful unto them."  

{ فَكُلُوا مِمَّا ذُكِرَ اسْمُ اللَّهِ عَلَيْهِ } { وَلاَ تَأْكُلُوا مِمَّا لَمْ يُذْكَرِ اسْمُ اللَّهِ عَلَيْهِ } فَنُسِخَ وَاسْتَثْنَى مِنْ ذَلِكَ فَقَالَ { وَطَعَامُ الَّذِينَ أُوتُوا الْكِتَابَ حِلٌّ لَكُمْ وَطَعَامُكُمْ حِلٌّ لَهُمْ }  

explaining the verse "But the evil ones ever inspire their friend to contend with you" They used to say: Do not eat which Allah killed, but eat which you slaughtered. So Allah revealed the verse: "Eat not of (meats) on which Allah's name hath not been pronounced"...to the end of the verse.  

عَنِ ابْنِ عَبَّاسٍ فِي قَوْلِهِ { وَإِنَّ الشَّيَاطِينَ لَيُوحُونَ إِلَى أَوْلِيَائِهِمْ } يَقُولُونَ مَا ذَبَحَ اللَّهُ فَلاَ تَأْكُلُوا وَمَا ذَبَحْتُمْ أَنْتُمْ فَكُلُوا فَأَنْزَلَ اللَّهُ ﷻ { وَلاَ تَأْكُلُوا مِمَّا لَمْ يُذْكَرِ اسْمُ اللَّهِ عَلَيْهِ }  

The Jews came to the Prophet ﷺ and said: We eat which we kill but we do not eat which Allah kills? So Allah revealed: "Eat not of (meats) on which Allah's name hath not been pronounced." to the end of the verse.  

جَاءَتِ الْيَهُودُ إِلَى النَّبِيِّ ﷺ فَقَالُوا نَأْكُلُ مِمَّا قَتَلْنَا وَلاَ نَأْكُلُ مِمَّا قَتَلَ اللَّهُ فَأَنْزَلَ اللَّهُ { وَلاَ تَأْكُلُوا مِمَّا لَمْ يُذْكَرِ اسْمُ اللَّهِ عَلَيْهِ } إِلَى آخِرِ الآيَةِ