A Powerful Shiva Namaskaratha Mantra(from Rigveda) meaning and lyrics described below
ॐ नमो हिरण्यबाहवे | हिरण्य वर्णाये | हिरण्यरूपाये | हिरण्येपतये | अम्बिकापतये | उमापतये | पशुपतये नमो नमः ||

OM Namo Hiranya-bahave Hiranya-varnyaya Hiranya-roopaya Hiranya-pataye Ambikapataya Umapataye Pashupataye Namo Namah
**Meaning : I trust in the divine essence, eternal nature, to form immortal, eternal Lord, Lord Parvati, and Uma, Lord of wild animals, I submit myself to you.

~Ishaan Mantra~
ईशानसर्वविद्यानां , ईश्वर्स्यसर्वभूतानां , ब्रह्माधिपति , ब्रहंणोधिपति
ब्रह्मा शिवो मे अस्तु सदा
शिव ॐ

Ishaana Sarvavidyanam IshwarSarvabhutanam
Brahmadhipati Brahmanodhipati Brahma Shivo Me Astu Sadashivoham
Meaning : Lord of knowledge, Lord of all that exists, Lord of Brahman, the Lord of supreme knowledge, the universal Spirit, I am Shiva, I am the eternal Shiva

~Shiva Gayatri Mantra or Tatpurush~
Om Tatpurushaya vidmahi
ॐ तत्पुरुषाय विद्महि
Vakvishudhaya dhimahi
वाकविशुद्धया धीमहि
Tanno Shiva Prachodayat
तन्नोः शिवः प्रचोदयात |

Om Mahadevaya vidmahi
ॐ महादेवाय विद्महि
Rudramurtaye dhimahi
रुद्र्मुर्ताय धीमहि
Tanno Shiva Prachodayat....
तन्नोः शिवः प्रचोदयात |

Namaste Astu Bhagvan
नमस्ते अस्तु भगवन

Vishveshvaraya
विश्वेश्वराय
Mahadevaya
महादेवाय
Trayambakaya
त्रिम्बकाय
Tripurantakaya
त्रिपुरान्तकाया
Trikagnikalaya
त्रिकाग्निकालाय
Kalagnirudraya
कालाग्निरुद्राय
Neelakantaya
नीलकण्ठाय
Mrityunjayaya
मृत्युञ्जयाय
Sarveshvaraya
सर्वेश्वराय
Sadashivaya
सदाशिवाय

Shriman Mahadevaya Namaha
श्रीमन् महादेवाय नमः

Om Shanti
ॐ शान्तिः

Meaning : We know the supreme intellect, we meditate on pure knowledge can enlighten Shiva We know the great deity, meditate on the form of Rudra, Shiva can enlighten us I salute the Divine Lord of all, the great gods from the third eye, the three worlds, the bearer of the three fires, carrying the fire of Rudra, blue sprinkled with ashes, which triumphs over death, Lord of all beings, eternal Shiva, I surrender to great great deity.

This is a very Powerful Shiva Mantra when Chanted regularly it reduces friction in our life. Same benefits is also achieved when listened to it with devotion regularly