prakṛtis tvāṁ niyokṣyati

yat-therefore; ahaṅkaram-false ego; asritya-taking shelter; na-not; yotsya-shall fight; iti-thus; manyase-think; mithya esah-this is all false; vyavasayah te-your determination; prakrtih-material nature; tvam-you; niyoksyati-will engage you.