We should consider the following as minimum.
Rahu aspecting 5,9,12 houses in opposite direction meaning Rahu aspects clockwise 5,9,12 H.
Therefore, Rahu dasa will activate house where Rahu is sitting, 5,9,12 houses.
In addition, Rahu will influence planet with it and in opposition and planets in constellation of Rahu.
Ketu also same excepting Ketu does not have any aspect.
Regards