BENGALURU/LONDON, June 19 : Brent crude steadied on Friday but held on track for a more than 8 per cent weekly decline, as traders weighed up fading prospects for a lasting U.S.-Iran truce after talks were called off and Israel escalated attacks in Lebanon. Brent crude futures were up 9 cents, or 0.1 per cent, at $79.94 a barrel by 1226 GMT, but were heading for a second weekly decline. The front-month July contract for U.S. West Texas Intermediate crude, which expires on Monday, rose 79 cents,