After every prescribed salat, Surah Ikhlas One Times:

بِسْمِ اللَّـهِ الرَّحْمَـٰنِ الرَّحِيمِ قُلْ هُوَ اللَّـهُ أَحَدٌ ﴿١﴾ اللَّـهُ الصَّمَدُ ﴿٢﴾ لَمْ يَلِدْ وَلَمْ يُولَدْ ﴿٣﴾ وَلَمْ يَكُن لَّهُ كُفُوًا أَحَدٌ ﴿٤﴾

Bismillaahir-Rahmaanir-Raheem. (1) Qul HuwAllahu 'Ahad. (2) Allahus-Samad. (3) Lam yalid wa lam yoolad. (4) Wa lam yakun lahu kufuwan 'ahad

In the name of Allah, the Entirely Merciful, the Especially Merciful. (1) Say, "He is Allah, [who is] One, (2) Allah, the Eternal Refuge. (3) He neither begets nor is born, (4) Nor is there to Him any equivalent." (Sura Ikhlas: 1-4) Surah Falaq One Times:

Reference: [1] Sahih (Albani). Abu Dawud: 1523 [2] Hasan (Albani). Abu Dawud: 5082