People wearing the colours of host club Mamelodi Sundowns temporarily blocked a bus carrying the Egyptian team to a Pretoria stadium and held placards, many of which contained abuse aimed at Mosimane.
Title-holders Al Ahly have been a bogey team for Mamelodi Sundowns, winning five of nine previous Champions League meetings and drawing three.
Mosimane turned Sundowns into the dominant South African club and guided them to the 2016 Champions League title before becoming the first sub-Saharan African to coach Egyptian giants Ahly last year.
The main activity of Safa since the days of champion coach Clive Barker has been the hiring and firing of coaches, not the winning of tournaments, writes David Maimela.
Success came as a huge relief for an Egyptian outfit coached by South African Pitso Mosimane as they achieved only one top-three finish in five previous Club World Cup appearances.
The Uruguayan striker penned a new five-year deal with Mamelodi Sundowns in June but has been linked with a R90 million move away.
Success for Ahly meant South African Pitso Mosimane became only the third coach after Argentine Oscar Fullone and Egyptian Mahmoud el Gohary to win the Champions League title with two clubs.
Mohamed 'Afsha' Magdy gave the Egyptian team a fourth-minute lead and Ali Maaloul increased it by converting a second-half penalty after the Moroccan side missed a spot-kick.
Mamelodi Sundowns's Themba Zwane and Gaston Sirino are up against Highlands Park's Peter Shalulile and Samir Nurkovic for the PSL Footballer of the Season award.
Pitso Mosimane’s reign as Al Ahly head coach got off to a winning start with a 1-0 victory over AL Mokawloon.
In his farewell statement – he has thanked Sundown owner Patrice Motsepe for being a mentor, friend and confidant.
According to news website Timeslive, Mosimane will join Al Ahly and will begin his new job as soon as he becomes available.
Mosimane has labelled the Absa Premiership title race as unbelievable after both challengers lost on Sunday.
Sundowns are in Rustenburg for a mini-training camp in preparation for the resumption of the season, with a date for the resumption of matches yet to be confirmed.
The SA Football Association (Safa) and the Premier Soccer League (PSL) have commissioned a task force to come up with a strategy on when the right time would be for games to be played behind closed doors.
Mosimane, who joined ‘The Brazilians’ in the middle of the 2012/13 season has gone on to be the most decorated coach in South Africa and with the new deal, will cement his place as the longest-serving coach at the club.
Pitso Mosimane spoke to the media after Sundowns' 1-0 victory over Stellenbosch FC at Athlone Stadium on Wednesday.
Sundowns struggled passed Stellenbosch to get 1-0 at Athlone Stadium on Wednesday thanks to Themba Zwane's eighth-minute strike.
