1.11. Sunnah of isti'aadhah (seeking refuge in Allah from Satan) and the basmala before reading the Quran

فَإِذَا قَرَأْتَ الْقُرْآنَ فَاسْتَعِذْ بِاللّهِ مِنَ الشَّيْطَانِ الرَّجِيمِ
So when you want to recite the Qur'ân, seek refuge with Allâh from Satan, the outcast . (An-Nahl 16:98)

There are three affirmed ways of making isti'aadhah from the reliable sources which are recommended to alternate in usage:-
1.أعوذ بالله من الشيطان الرجيم
a'oodhu billaahi minash-shaytaanir-rajeem
I seek refuge in Allah from Satan, the outcast.

2.أعوذ بالله السميع العليم من الشيطان الرجيم من همزه ونفخه ونفثه
a'oodhu billaahis-samee'il-'aleemi minash-shaytaanir-rajeem min hamzihi wa nafkhihi wa nafthih
I seek refuge in Allah, the All-Hearing, the All-Seeing, from Satan, the outcast - from his pride, his poetry and his madness.

3.أعوذ بالسميع العليم من الشيطان الرجيم
a'oodhu bis-samee'il-'aleemi minash-shaytaanir-rajeem
I seek refuge the All-Hearing, the All-Seeing, from Satan, the outcast.

The isti'aadhahkeeps Satan at a distance so that one's heart can be better focussed on reflecting upon the Quran.

It is also an established Sunnah to recite the basmala before reciting the Quran to.

There is no authentic evidence to habitually end the recitation of the Quran with sadaqallaahul-'azeem ("Allah, the Almighty, has spoken the truth").