These storyboards can be seen in full at the Sunbow and Marvel Productions Script/Storyboard Archive.

This storyboard wanted Unicron to shoot lasers from both of his eyes during this shot. In the movie, he only fires lasers from his intact eye.

This storyboard wanted the Dinobots to be firing at Unicron during this shot. In the movie, they aren't seen firing.

This shot was cut. It was meant to be seen after Slag attacks Unicron with his fire breath.

These storyboards show that Unicron was meant to try and shoot the Dinobots with one of his eye lasers. In the movie, he attempts to grab them instead.