Nigeria, three-time African champions, have Guinea and Madagascar as other opposition during the competit=ion.
The West Africans will take on Burundi, debutants, in their first match in the championship this weekend.
And Rohr has identified them as the strongest side for his boys in the group phase of the competition.
“The Burundi match will be our toughest in the group stages,” he told NFF.com. “Once we get it right, we can go on from there.”