Fearless (Dominion Trilogy #2) by Robin Parrish

Earthquakes, fire, disease, and floods pummel the earth, and its citizens watch in horror.

But in the darkness there is hope...an anonymous but powerful hero whom the public dubs "Guardian" emerges from the wreckage. He is Grant Borrows, one a chosen few who walk the earth with extraordinary powers. They travel the globe, helping those in deepest peril and determined to uncover the secret behind this world-shattering cataclysm.

But when signs of a dangerous ancient prophecy begin coming true, dark questions arise about secrets Grant might still be harboring.

The world teeters on the brink. But some refuse to let it fall. They are: Fearless