Protection

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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)"])

Ian's father holding Ian (possessed by Proteus). Proteus: "This man wants to protect him." (TV: Proteus (episode 1) ^[+]Loading...{"timestamp":"12:22","ep":"1","1":"Proteus (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)"})