In a system of Riba, how do you protect yourself?

The Islamic alternatives are no better than the conventional methods in that they focus on contractual language from classicalk contracts yet they do not preserve the benefit that the prevention of Riba is supposed to accomplish, which is why I had mentioned that the economic substance related to Riba is of utmost importance in understanding and creating a legit Islamic finance system.

Can you please quote the hadith?

In todays world, the decision is entirely personal to avoid Riba. Simply don't do it. As for creating an Islamic system of finance, we have fallen short because they do not really provide any benefit as compared to a conventional system of banking today. Islamic finance must evolve from Islamic jurisprudence which should pick the better of two benefits and the lesser of two evils. Arbitrage in contractual language of Islamic finances has not yet changed the economic injustice they do to muslims, which is the primary purpose of forbidding Riba.