I remember from the Messenger of Allah ﷺ two periods of silence. Sa'id said: We asked Qatadah: What are those two periods of silence? He said: (one) when he began his prayer, and (one) when he finished the recitation. Then he added: When he finished reciting (the closing verse of the Fatihah): "Not of those with whom Thou art angry, nor of who go astray." (Using translation from Abū Dāʾūd 780)
عَنْ رَسُولِ اللهِ ﷺ قَالَ فِيهِ قَالَ سَعِيدٌ ققُلْنَا لِقَتَادَةَ مَا هَاتَانِ السَّكْتَتَانِ؟ فَقَالَ إِذَا دَخَلَ فِي صَلَاتِهِ وَإِذَا فَرَغَ مِنَ الْقِرَاءَةِ ثُمَّ قَالَ بَعْدُ وَإِذَا قَالَ غَيْرِ الْمَغْضُوبِ عَلَيْهِمْ وَلَا الضَّالِّينَ