We can't do much about it. Let me explain in a simple manner.
1. Chinese economy goes down ---> China's oil, coal, iron ore and other raw material import goes down ---> Whole middle east, Australia, Brazil and South Africa economy go down -----> India's export to middle east and remittance from these country goes down and lakhs of jobless people are back in India
2. Chinese economy goes down ---> Sell of automobiles, mobiles, electronics and construction goes down ----> US/European companies revenue and profit is badly hit and massive layoffs ----> US/Europe goes into recession ----> India's services sector as well as export is badly hit
These are just couple of very very simplistic scenario. Reality is every country is so much entangled with other countries that nobody is/can be isolated from the domino effect of any major economy going into recession.
When oil price goes down, India's tax collection is badly hit and that affects the fiscal deficit of Indian government and restricts governments capacity to jump start the economy during recession.
Over the years Indian government has been heavily dependent on taxes from petrol/diesel and it's high time they reduce this dependency.