2:12  

न त्वेवाहं जातु नासं न त्वं नेमे जनाधिपाः ।
न चैव न भविष्यामः सर्वे वयमतः परम् ॥२- १२॥

na twewaahaM jaatu naasaM na twaM neme janaadhipaaH ।

na chaiwa na bhawiShyaamaH sarwe wayamataH param ॥२- १२॥

Source: Automatic ITRANS Transliteration

However, it is certainly not that I ever did not exist, nor you, nor these kings.
And all of us certainly will not not exist henceforth.

Source: Milind S. Pandit

There was never a time when I, you, or these kings did not exist; nor shall we ever cease to exist in the future.

Source: The Bhagavad-Gita: The Sacred Song

Never was there a time when I did not exist, nor you, nor all these kings; nor in the future shall any of us cease to be.

Source: Bhagavad Gita As It Is