Bhagavad Gita 18.43 Chapter 18, Verse 43

शौर्यं तेजो धृतिर्दाक्ष्यं युद्धे चाप्यपलायनम् ।
दानमीश्वरभावश्च क्षात्रं कर्म स्वभावजम् ॥१८.४३॥

śauryaṃ tejo dhṛtirdākṣyaṃ yuddhe cāpyapalāyanam
dānamīśvarabhāvaśca kṣātraṃ karma svabhāvajam

Meaning

Heroism, vigour, fortitude, skill, not fleeing from battle, generosity and leadership are the natural duties of a Kshatriya.

Newly written by Bhajan Dhun — scholarly review in progress.

Reference: Bhagavad Gita 18.43 (Chapter 18, Liberation through Renunciation (Moksha Sannyasa Yoga), Verse 43)