рост курса иностранных валют("The rouble weakening provides additional support for the Russian steelmakers' export competitiveness," said Russia's second-biggest ... Alexander Demidov)
укрепляться по отношению к(доллар укрепляется по отношению к рублю = the rouble is weakening against the dollar. The Yuan is Weakening Against the U.S. Dollar. | The US Dollar is weakening against the market's major currencies. | The dollar is weakening against both the Euro and the pound sterling at the end of the trading week, following the release of a trio of disappointing economic reports. Alexander Demidov)
ослабление рубля(more hits. In March 2014 amid the continued weakening of the rouble against major world currencies and the uncertainty of expecting further declines, ... Alexander Demidov)
рост курса иностранных валют(Experts warned that a weakening rouble would increase inflation pressures as imports got more expensive. BBC | Apple last month increased its prices in Russia by 20% after the weakening rouble left products in the country cheaper than in the rest of ... BBC Alexander Demidov)