Dharma Rakshati Rakshitah means; if you protect Dharma, then Dharma will protect you.

Dharma means Reet, or Cosmic principles or eternal principles which upholds life in this universe. These principles includes, Truth, Compassion and love towards all life, Which is Godly.
By love & Truth whole creation is bound together. Truth to speak whatever seen or understood as it is. Truth is God.

(This is a quote from Mahabharata, an Indian ancient holy scripture)