The Ferrari driver's landmark success came in the aftermath of 22-year-old Frenchman Hubert's death in Saturday’s tragic Formula Two race.
The 25-year-old tested positive for ‘multiple anabolic steroids and metabolites’ and faces up to four years out of the game because of the offence.
The minute of silence will be observed at 14:53pm local time on the grid before the race gets underway at 15:10pm, according to an official schedule.
In a statement, the auto racing governing body said that Hubert, 22, died following a 'serious incident' at Spa-Francorchamps, a three-car pile-up in the second lap of the race.
Trailing 11-20 at half time, the hosts scored 40 points in the second half, ending up with a total of seven tries to their name.
New Zealand – in the same pool as two-times winners South Africa, Italy, Namibia and Canada – open against the Springboks on 21 September in Yokohama.
Barca’s attempt to re-sign Neymar two years after he joined PSG for a world record €222 million (£201.5 million) has dominated sports headlines for months.
Ntseki was appointed the coach on an interim basis three weeks ago following Stuart Baxter's departure last month.
The Lions will meet either the Cheetahs or the Sharks in the title decider next week.
United boss Ole Gunnar Solskjaer conceded his team lacked the killer instinct in the opposition half.
