Nārāyaṇa-kavaca — The Armor of Lord Nārāyaṇa
न्यसेद्धृदय ओंङ्कारं विकारमनु मूर्धनि । षकारं तु भ्रुवोर्मध्ये णकारं शिखया न्यसेत् ॥ ८ ॥ वेकारं नेत्रयोर्युञ्ज्यान्नकारं सर्वसन्धिषु । मकारमस्त्रमुद्दिश्य मन्त्रमूर्तिर्भवेद् बुध: ॥ ९ ॥ सविसर्गं फडन्तं तत्सर्वदिक्षु विनिर्दिशेत् । ॐ विष्णवे नम इति ॥ १० ॥
nyased dhṛdaya oṁkāraṁ vi-kāram anu mūrdhani ṣa-kāraṁ tu bhruvor madhye ṇa-kāraṁ śikhayā nyaset
六音節の真言『オーム・ヴィシュナヴェ・ナマハ』を唱えつつ、『オーム』を心臓に、『ヴィ』を頭頂に、『シャ』を眉間に、『ナ』をシカーに、『ヴェ』を両眼の間に安置する。さらに『ナ』を全身の関節に安置し、『マ』を武器として観想すれば、行者は真言の姿となる。最後に『マ』へヴィサルガを添え、『マḥ・アストラーヤ・パト』を東から諸方へ唱える。
In Canto 6, Chapter 8, Śukadeva explains the Narayana-kavaca as a devotional protective shield, applied through mantra and remembrance of Lord Viṣṇu in all directions.
Parīkṣit was hearing the Bhagavatam as the final and complete shelter before death; Śukadeva therefore taught practices that fix the mind on Viṣṇu and invoke divine protection through bhakti.
Even without technical ritual, one can apply the essence by daily chanting “Oṁ viṣṇave namaḥ,” remembering Viṣṇu’s protection, and beginning work or travel with prayerful mindfulness.