2 verses have
lest
in Edition Clear Qur'an by Talal Itani / Al-Hujuraat (The Inner Apartments)

49:2O you who believe! Do not raise your voices above the voice of the Prophet, and do not speak loudly to him, as you speak loudly to one another, lest your works be in vain without you realizing.

49:6O you who believe! If a troublemaker brings you any news, investigate, lest you harm people out of ignorance, and you become regretful for what you have done.