The 60-year-old trainer has spoken positively about his side's performance in their defeat to Marseille and also claimed he will not be leaving the club anytime soon
The experienced coach, who only joined the club the club at the end of September, made a solid start to his career at San Siro, lifting the club from 17th position to Champions League qualification contention.
However, Ranieri's fortunes at the club have taken a turn for the worse in the past month with the side losing six of their last seven fixtures in all competitions.
The 60-year-old is reportedly close to losing his job at the 2010 Champions League winners yet the coach himself is confident he will remain in his role beyond this weekend.
"I don't think that this could be my last game in charge. I do not feel at risk and I feel the confidence of the club in me. We've got to get out of this situation," Ranieri told reporters in his press conference.
"We are only a point behind Napoli, even if they are fired up right now. I must admit I've never had such a bleak period in my career with six defeats."
Despite the club's shocking run of results, the former Roma trainer was positive when speaking about the team's 1-0 defeat to Olympique de Marseille in their Champions League first leg Round of 16 encounter on Wednesday evening.
"I liked the team against Marseille on Wednesday and was very happy with their show of character, especially at a time when things aren't going well. We must continue with this character and determination," he added.
"Wesley Sneijder had a great game in France and I've never seen him work so hard. He is a trequartista, but I asked him to run more without the ball."
Ranieri also confirmed that the club president, Massimo Moratti had visited the side's Appiano Gentile training ground on Saturday, but played down the importance of the supremo's cameo appearance.
"He often speaks to us. The president was upset by the defeat [against Marseille] but is very calm. He wants a reaction and we'll give it to him. We must be positive and win. I'm sure we'll get back on track and hopefully it will happen tomorrow. All is not lost in Serie A or the Champions League," the coach stated.
"My teams always to on to the field in order to win. I have never told any of my sides to play for a draw. We're angry and have to react."
Inter's visit to Napoli is scheduled for a 20.45CET kick-off on Sunday evening.