Those who believed (in the Oneness of Allah - Islamic Monotheism), and used to fear Allah much (by abstaining from evil deeds and sins and by doing righteous deeds)
Those who have believed and accomplished protection.
Sayyed Abbas Sadr-Ameli
Those who believe and constantly keep from evil.
Al-muntakhab fi tafsir al-Qur'an al-Karim
They have faithfully recognized Allah with hearts impressed with the image of religious and spiritual virtues and entertained the profound reverence dutiful to Him