Terms containing execution of duty

Subject	English	Russian
gen.	execution of one's duty	исполнение служебного долга ("Beg to report thirty-one offences of Making an Affray, sir, and fifty-six cases of Riotous Behaviour, forty-one offences of Obstructing an Officer of the Watch in the Execution of his Duty, thirteen offences of Assault with a Deadly Weapon..." (Pratchett)
Makarov.	in the execution of official duty	при исполнении служебных обязанностей
gen.	while in the execution of one's duty	при исполнении обязанностей (MichaelBurov)
gen.	while in the execution of one's duty	при исполнении служебных обязанностей (MichaelBurov)
gen.	while in the execution of one's duty	при исполнении (разг. сокр. MichaelBurov)
gen.	while in the execution of his duty	при исполнении служебных обязанностей (If any person assaults an officer of a court while in the execution of his duty, he shall be liable ... 4uzhoj)
Makarov.	you will have no obstruction from us in the execution of your duty	вы не встретите никаких помех с нашей стороны в исполнении своих обязанностей