Comparative evidence

h₂leks

• OInd. rakṣ- 'protect' (Whitney 1885: 134); 'guard', 'watch', 'take care' (of), 'save', 'preserve'; 'tend' (cattle); 'rule' (the earth or a country); 'keep' (a secret); 'spare', 'have regard' (to); 'observe' (a law, duty); 'ward' (off), 'prevent', 'frustrate', 'injure'; 'beware' (of); 'heed', 'attend' (to); 'conceal', 'hide' (?), 'be afraid' (?) (MW: 859)

• OInd. rakṣ- 'guarding', 'watching' (MW: 859)

References

MW = Monier-Williams, M. 1899. A Sanskrit-English Dictionary. Clarendon Press.
Whitney 1885 = Whitney W. D. 1885. The roots, verb forms and primary derivatives of the Sanskrit language. A supplement to his Sanskrit grammar. Leipzig.