LoveStruck21,
Was trying to listen and understand what Bhuji meant to say to Arpi was that life with a goonda like Avdhesh is not going to be easy for Apri.
As Avdhesh's life is full of violence and has to deal with weapons, kiddnapping etc. i.e. andhi toofah which she mentions in the promo. In the middle of all this ups and downs Apri is trying to bring the light of love into Avdhesh's life i.e. Bhuji says that Apri is trying to light a diya of love in all this andhi and toofan like life of Avdhesh.
So she challenges Apri that lets see how long she is able to sustain her love for Avdhesh in all this so violent life of his.
Hope this helps dont know if i have gone wrong somewhere. Just hoping our Apri is more stronger that this Bhuji and will stand up for her love Avdhesh.