He's scored nine goals in 15 games plus two in five Europa League appearances.
âI am truly happy in Rome, as Lazio were what I had been looking for,â said the 33-year-old.
âIn this period I trained really hard and this is why I scored so many goals. I feel good psychologically and physically, while I get on perfectly with Coach Edy Reja.
âI donât want to give myself compliments, though, because I still really want to improve. If the fans have nicknamed me Kaiser than Iâm happy, as such an important name means Iâm doing well.
âEuro 2012 is the big objective I have in mind for next year, but itâs not the only one.â