Garuḍa Purāṇa

 Garuḍa Purāṇa lists some mṛtyu rakṣa mantra in the following śloka.
ॐ अमृतेश्वर ॐ भैरवाय नमः।
एवं ॐ जुं हंसः सूर्याय नमः॥ १।१८।१९॥
om amṛteśvara om bhairavāya namaḥ |
evaṁ om juṁ haṁsaḥ sūryāya namaḥ || 1|18|19 ||
Step-1: The first step to strengthen the Lagna with the first mantra. This is common for everyone and firmly establishes the oṁkāra on the ascendant.
ॐ अमृतेश्वर ॐ भैरवाय नमः।
om amṛteśvara om bhairavāya namaḥ
Step-2: Once this is done then all evils are under check and the second mantra is to be used to protect the soul. The second mantra is a combination of the Kahola ṛṣi Mṛtyuṅjaya bīja mantra ‘om juṁ saḥ’ and the mantra for chara ātmakāraka. The mantra takes the form ‘om juṁ haṁsaḥ sūryāya namaḥ’ for one who is born with Sun as chara ātmakāraka.
एवं शिवाय कृष्णाय ब्रह्मणे च गणाय च।
चण्डिकायै सरस्वत्यै महालक्ष्मादि पूजयेत्॥ १।१८।२०॥
evaṁ śivāya kṛṣṇāya brahmaṇe ca gaṇāya ca |
caṇḍikāyai sarasvatyai mahālakṣmādi pūjayet || 1|18|20 ||
For other planets as chara ātmakāraka another seven deities have been mentioned in the Garuḍa Purāṇa. The eight specifically mentioned for eight chara ātmakāraka are – Sūrya, Śiva, Kṛṣṇa, Gaṇa (Gaṇeśa), Brahma, Caṇḍīkā, Sarasvatī and Lakṣmī. The mantras are listed below. It is important that the correct mantra should be chosen for the planet which is chara ātmakāraka. These mantra remove every poison in the system and restore health.
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Sun as Ātmakāraka
ॐ जुं हंसः सूर्याय नमः।
om juṁ haṁsaḥ sūryāya namaḥ|
Jupiter as Ātmakāraka
ॐ जुं हंसः शिवाय नमः।
om juṁ haṁsaḥ śivāya namaḥ|
Mercury as Ātmakāraka
ॐ जुं हंसः कृष्णाय नमः।
om juṁ haṁsaḥ kṛṣṇāya namaḥ|
Saturn as Ātmakāraka
ॐ जुं हंसः ब्रह्मणे नमः।
om juṁ haṁsaḥ brahmaṇe namaḥ|    Mars as Ātmakāraka
ॐ जुं हंसः गणाय नमः।
om juṁ haṁsaḥ gaṇāya namaḥ|
Rāhu as Ātmakāraka
ॐ जुं हंसः चण्डिकायै नमः।
om juṁ haṁsaḥ caṇḍikāyai namaḥ|
Moon as Ātmakāraka
ॐ जुं हंसः सरस्वत्यै नमः।
om juṁ haṁsaḥ sarasvatyai namaḥ|
Venus as Ātmakāraka
ॐ जुं हंसः महालक्ष्म्यै नमः।
om juṁ haṁsaḥ mahālakṣmyai namaḥ|