Here are a list of Lord Shiva mantras with its meanings
Lord Shiva Prayer – I
Om Sarva Mangal Manglaye Shivay Sarvaarth Sadhike
Sharanye Trayambake Gauri Narayaani Namostu Te
Translation: I salute to Narayani (Sister of Narayana, Parvathi) and the three-eyed God(Lord shiva ), who is the most auspicious of the auspicious, which is adored by Brahma, Vishnu and other Gods, who makes all desires possible, and in whom I can take refuge. O creator of the Universe we meditate upon the Supreme splendor. May your rediant power illuminate our intelligent, destroy our sins, and guide us in the right direction.
Lord Shiva Prayer - II
Om Namastestu Bhagavan
Trikagni - Kalaya
Kalagni - Rudraya Nil - Kanthaya Mrityunjaya
Sriman Mahadevaya Namah.
Translation: Hail, the cause of the universe [as the transformer, Shiva causes the absorption of the universe for the recreation] and the destroyer; praise to the one whose ornaments’ are the gemstone bearing cobras; one who bears the animals; praise to the protector of animals; praise one whose eyes are the sun, moon and fire; and praise to the refuge of devotees; to the giver of boons; praise to the auspicious shankara
Lord Shiva Prayer – III
Naagendra haaraaya thriloochanaaya bhasmaangadhaaraaya maheshwaraaya
Nityaaya shudhdhaaya digambaraaya tasmai nakaaraaya namahshivaaya
Translation: I offer my humble salutations to Lord Mahesvara - who has a garland of serpents around the neck; who has three eyes; whose body is covered with ash (vibhuti); who is eternal; who is pure; who has the entire sky as His dress and who is embodies as the first.
Shivo Bhokta, Shiva Bhojya
Shivo Karta, Shivah Karma
Translation: Lord Shiva, Master of Universe, Supreme, effulgent being. You are everything and you are nothing. You are giver of life and a Destroyer. Without you there is nothing. Everything starts with you and ends with you. You are simply “one God and Father of all, who is over all, and through all, and in all”