Shah also claimed BJP will win a two thirds majority in Gujarat, where polls are due next year end, as he rejected the contention that it was on a sticky wicket following the violent Patidar quota agitation.
He dismissed reports that the BJP brass was mulling over removing Chief Minister Anandiben Patel and said the party had not discussed the issue.
"It is certain that BJP will get a majority in UP," he said, adding the party had a strong base in the state where it won 71 of the 80 Lok Sabha seats in 2014.
His strong expectation from UP was not linked to the party's win in Assam, Shah said, adding the key Hindi heartland state was "easy" even before the polls in the northeastern state.
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Shah said he considered SP as the BJP's main adversary because of its larger support base than Mayawati's BSP. The saffron outfit has been trying to wean away Dalit votes from Mayawati-led BSP.
To a query whether he was under pressure to deliver UP to the party, he said "There is always pressure for me".
Asked about Bihar Chief Minister Nitish Kumar's plan to contest the UP polls, he said if Nitish factor worked, it would only benefit BJP. He was apparently referring to the split of secular votes the presence of Kumar's JD(U) in the electoral fray could cause.
"There is a massive anti-incumbency wave in the state. We will come to power whenever polls are held," he asserted.
The hill state will go to the polls with UP next year.
Shah noted that Modi has assured the people that those
behind the incident will be punished. "However long is the battle, we will fight it and the victory will be ours."
The world is shocked at Pakistan Prime Minister Nawaz Sharif's reference to Hizbul Mujahideen militant Burhan Wani as a "peace-loving youth"and it is an evidence of that country's involvement in terrorism, he said.
India has long been a victim of Pakistan's sponsorship of terrorism and faced several small and big terror attacks in the last many years.
"Pakistan has become a centre of global terrorism," he said.