Protection
On Earth in 2526, the Fifth Doctor deduced that a pair of androids found in a cavern were programmed to protect a hatch which was later found to be covering a Cyber-bomb. (TV: Earthshock [+]Loading...["Earthshock (TV story)"])
Jackie Tyler angrily told Elton Pope that she would protect both her daughter, Rose Tyler, and the Tenth Doctor until the end of her life. (TV: Love & Monsters [+]Loading...["Love & Monsters (TV story)"])
Other realities
Earth-92131
In Earth-92131, while possessing Ian, Proteus observed that his father wanted to protect him, that he loved him, and that he would do anything for him. (TV: Proteus (episode 1) [+]Loading...{"ep":"1","1":"Proteus (TV story)"})