स्वधर्ममपि चावेक्ष्य न विकम्पितुमर्हसि। धर्म्याद्धि युद्धाछ्रेयोऽन्यत्क्षत्रियस्य न विद्यते
swa-dharmam api chāvekṣhya na vikampitum arhasi dharmyāddhi yuddhāch chhreyo ’nyat kṣhatriyasya na vidyate
You must look at your duty. Nothing can be more welcome to a soldier than a righteous war. Therefore, wavering in this resolve is unworthy, O Arjuna!
Translated by Shri Purohit Swami
Further, having regard to your duty, you should not waver, for there is nothing higher for a Kshatriya than a righteous war.
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
swa-dharmam—one’s duty in accordance with the Vedas; api—also; cha—and; avekṣhya—considering; na—not; vikampitum—to waver; arhasi—should; dharmyāt—for righteousness; hi—indeed; yuddhāt—than fighting; śhreyaḥ—better; anyat—another; kṣhatriyasya—of a warrior; na—not; vidyate—exists