Mahabharata 12.120.3

भीष्म उवाच · bhīṣma uvāca

रक्षणं सर्वभूतानामिति क्षत्रे परं मतम्तद्यथा रक्षणं कुर्यात्तथा शृणु महीपते

rakṣaṇaṃ sarvabhūtānāmiti kṣatre paraṃ matamtadyathā rakṣaṇaṃ kuryāttathā śṛṇu mahīpate

Our plain-language meaning of this verse is waiting for scholar review.