"important role in securing" is correct and usable in written English.
You could use it to describe the part that a person or thing plays in making sure something is achieved. For example, "The bodyguard's presence played an important role in securing the VIP's safety."
Point of sale payments technology has changed quite a bit since the 1960s, and although PINs still play an important role in securing many transactions, we are moving technology forward with incredible advances in security.
Former Senator Alfonse M. D'Amato, Mr. Goldberg's adviser at the time who also knew the Mohawk chiefs, played an important role in securing the deal.
George Osborne unwisely suggested that his new DPT, which came into force last April, had played an important role in securing a tax settlement with Google.
"Currently they are returning in higher numbers because they feel comfortable that SFOR plays an important role in securing Bosnia-Herzegovina," he said.
Primakov, who died earlier this year, played an important role in securing tight links between the Russian and Syrian intelligence services.
"For the stability of Iraq," he said "regional countries have an important role in securing their borders, confronting those who work to destabilize Iraq from within their territories, promoting religious and ethnic tolerance and developing healthy economic exchange".
Dances, songs sung with a sasara (musical instrument), sowing of seeds, and feasting play important roles in securing the aid of the kami (gods or spirits).
In 1970, as legislative director of the Oil, Chemical and Atomic Workers Union, he played a crucial role in securing passage of the Occupational Safety and Health Act, which is often called the most important pro-worker legislation of the last 50 years.
Chaos synchronization plays an important role in secure communication, digital cryptography, image encryption, signal and control processing [12 19].
In fact, Zambia remains one of the top 10 most peaceful countries in Africa and played an important role in offering secure refuge for those who fled the conflict in the above mentioned countries.
