safeguard [safeguards](something that serves as a guard or protection; a defense) noun [UK: ˈseɪf.ɡɑːd] [US: ˈseɪf.ˌɡɑːrd]
guardaespaldasnoun {m} {f}
bodyguard [bodyguards](person responsible for protecting an individual) noun [UK: ˈbɒ.dɪ.ɡɑːd] [US: ˈbɑː.di.ˌɡɑːrd]I'll be your bodyguard. = Seré tu guardaespaldas.