Allāhu ma’ī, Allāhu shāhidī, Allāhu hāḍirī, Allāhu qarībun minnī, Allāh naẓirun ilayya
Allah is with me, Allah witnesses me, Allah is present with me, Allah is near me, Allah is watching me.
Read 100 times a day:
Huw’Allāhu’lladhī lā ilāha illā hu, ‘Ālimu’l ghaybi wash-shahādah, Hu arrahmānu’ rahīm
Allah is He, than Whom there is no other god;- Who knows (all things) both secret and open; He, Most Gracious, Most Merciful. [Qur’an al Hashr, 59:22]
We are also told to Bestow abundant prayers upon the Prophet Muhammad (s.a.w), while doing so imagine that you are in the Blessed Rawḍah or in front of the Ka`bah. All of this will purify the heart and remove disturbing images.