Bulls head coach Nollis Marais believes that the Lions are still one of Super Rugby's best sides despite being without pivot Elton Jantjies.
Jantjies dislocated his finger in the victory over the Jaguares last week which is set to keep him on the sidelines for at least four weeks.
The Bulls are currently atop the Africa One Conference table after they edged the Stormers 17-13 in last week's top of the table clash at Loftus Versveld.
Marais admits that the Johannesburg outfit are a force to reckoned with and should not be considered a weakened side now that they are without Jantjies.
Johan Ackermann will in all likelihood name Currie Cup fly-half Marnitz Boshoff in the number ten position.
"Elton has been playing well but their side brings so much as well," Marais told SuperSport.
"Marnitz Boshoff – if they play him, he is an excellent rugby player as well.
"That team doesn’t rely on just one person, they are a good team all over. So it doesn’t matter who we play against, they will be a formidable side."
The men from Pretoria are the only team that are unbeaten at home and with the possibility of going into the mid-season break at the top of the table, if they win on Saturday, Marais concedes that they will have to be at their very best.
"For us it is very easy, we have been inconsistent at certain stages of the season and we wanted to change that. We made a decision at the beginning of the season, if we play at Loftus then we need to be up for it. There are no excuses," Marais declared.
"We are playing possibly the best attacking side in South Africa and it is good for us to measure ourselves against them. To see how far we are, we have to play against the Currie Cup champions and currently the number one side in South Africa. It isn’t difficult to motivate this side."