Pronunciation: Subhanallah, Wal-hamdu-lil-lah, Wa la i-laha il-lal-lah, Wal-lahu Akbar.
Meaning: Glory is to Allah, and praise is to Allah, and there is none worthy of worship but Allah, and Allah is the Greatest.
Virtue: The Messenger of Allah (ﷺ) said, "The uttering of the words: "Subhan-Allah (Allah is free from imperfection), Al-hamdu lillah (all praise is due to Allah), La ilaha illallah (there is no true god except Allah) and Allahu Akbar (Allah is the Greatest)' is dearer to me than anything over which the sun rises."
This combination of Dhikr is the one of the most beloved by Allah subhana wa ta'ala. When you say them, sins fall off you like leaves fall off trees.
Easy Dhikr can be done anywhere and anytime:
"And when you have completed the prayer, remember Allah standing, sitting, or [lying] on your sides." (Surah Nisa Verse 103)
During night or day, on firm ground or on in the sea, on a trip or at home, in wealth or poverty, in sickness or in health, in secret or announced, in all situations.
SO the more we remember Allah the more our Iman will increase each and everyday and the more our hearts and souls will be illuminated in peace and tranquility!
Reference: Sahih Muslim Book 16, Hadith 2