BHP Group BHP.AX, Rio Tinto RIO.AX dropped nearly 2% each and led the index to snap a four-week rally. By John Biju Feb 3 (Reuters) - Australian shares closed higher on Friday to mark their fifth straight weekly gain, with investors shifting focus to next week's events, which include the central bank’s decision and a slew of corporate earnings. Looking ahead, the Reserve Bank of Australia's (RBA) policy meeting on Tuesday is in focus, where it is expected to deliver a quarter-point interest rate hike, as it grapples with an unexpected revival in inflation.