I checked it. This is how many goals they scored against Juventus in their career:
1. Cruz 10 goals (7 with Inter, 2 with Feyenoord, 1 with Bologna)
2. Rocchi 6 goals (3 with Lazio, 3 with Empoli)
3. Pandev 4 goals (4 with Lazio)
4. Zarate 1 goal (Lazio)
I don't think any other team has attackers who scored as many goals vs Juve as Lazio's current set of attackers.
They'll probably sell Pandev today though.