Answer in Details
However, from a Shaivite perspective, Lord Shiva is seen as the eternal force behind creation, preservation, and destruction. Shiva is the embodiment of dharma and cosmic law. He destroys ignorance and adharma (unrighteousness) through his cosmic dance (Tandava) and grants boons to his devotees who uphold dharma.
To "save dharma," one must follow the path shown by Lord Shiva: practice truthfulness, self-control, compassion, meditation, and devotion. Shiva teaches that by conquering ego and desires, and by remaining devoted to righteousness, one can uphold dharma in any age.
So, while Kalki is a concept in Vaishnavism, the essence of saving dharma is deeply rooted in Shiva’s teachings: transform the self, uphold righteousness, and surrender to the Divine.