After the last tashahhud & before salam #11

اَللّٰهُمَّ إِنِّيْ أَسْأَلُكَ بِأَنِّيْ أَشْهَدُ أَنَّكَ أَنْتَ اللّٰهُ لَا إِلٰهَ إِلَّا أَنْتَ الْأَحَدُ الصَّمَدُ الَّذِيْ لَمْ يَلِدْ وَلَمْ يُوْلَدْ وَلَمْ يَكُنْ لَّهُ كُفُوًا أَحَدٌ

O Allah, I ask You, by the fact that I bear witness that You are Allah. There is none worthy of worship but You, the Only God, Independent of creation, Who was not begotten and begets not, and none is equal to Him.

Allaahumma 'innee 'as'aluka bi'annee 'ash-hadu 'annaka 'Antallaahu laa 'ilaaha 'illaa 'Antal-'Ahadus-Samadul-lathee lam yalid wa lam yoolad wa lam yakun lahu kufuwan 'Ahad..