What is the prophecy given to Percy or Thalia?

It's not exactly a prophecy given to Percy or Thalia, but rather a prophecy about them. It's the Great Prophecy, which was first revealed in *The Lightning Thief*, and it foretells the rise of a child of the Big Three (Zeus, Poseidon, or Hades) who will either save or destroy Olympus. Here's the text:

**"A child of the eldest gods, shall be born of the sea,

And rise to meet the titan's curse,

A hero's fate, he shall fulfill,

Or doom Olympus to endless night.**"

The prophecy refers to Percy Jackson, the son of Poseidon, but also applies to Thalia Grace, who was a daughter of Zeus. Both were significant in the fight against the Titans, fulfilling the prophecy's first part.

It's important to note that the prophecy is open to interpretation. There is no single definitive answer to what the "Titan's curse" is or how the prophecy can be fulfilled. The prophecy is part of the driving force of the Percy Jackson series, constantly influencing events and shaping the choices of the characters.