To get access to the Ja Baij Shrine, you have to locate the mass of rock that covers an enclosed area it's inside. Thankfully the walls of the ruins will block its tracking laser, so sprint through one open area to the next to avoid their glare. Hitting it in its blue eye with an arrow will damage it, but we advice is to ignore them entirely.
As you approach, ancient Guardian machines will come to life and target you with their lasers. This Shrine is off to the east of the Great Plateau, inside a series of Ruins. If you're after help for parts of the game, consult our Zelda: Breath of the Wild walkthrough and guide. Zelda: Breath of the Wild's Ja Baij Shrine is one of four Shrines required to complete the The Isolated Plateau quest, alongside the Keh Nanut Shrine and the Owa Daim Shrine, and doing so will earn you the Bomb rune.