Bhagavad Gita · 11.34

द्रोणं च भीष्मं च जयद्रथं चकर्णं तथान्यानपि योधवीरान्।मया हतांस्त्वं जहि मा व्यथिष्ठायुध्यस्व जेतासि रणे सपत्नान्॥

droṇaṁ cha bhīṣhmaṁ cha jayadrathaṁ cha karṇaṁ tathānyān api yodha-vīrān mayā hatāns tvaṁ jahi mā vyathiṣhṭhā yudhyasva jetāsi raṇe sapatnān

Drona, Bhishma, Jayadratha, Karna, and other brave warriors have already been slain by me. Do not fear — fight! You shall conquer your enemies in battle.

— Bhagavad Gita 11.34

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)