Dodge movement - restrict movement of an object left and right

I am looking to move a first-person camera (attached to an object of a human character) which is currently fixed in position, such that the left cursor moves the camera/object very slightly to the left before quickly returning to its original fixed position, and likewise pressing the right arrow moves the camera/object slightly to the right before returning to it's original position.

Essentially I am looking to replicate a dodge action, whereby pressing the left and right arrows on the keypad can be used to make the player dodge small oncoming objects.

Would anyone have a script that would move a game object in this way?